What is disliked the most this season?

Would love to know what you dislike the most from my list[/b]
1. Mary Winchester ( I literally despise the character now) -10/10 (you can make it a 0 for your tally lol)
2. The British Men of Letters (I have no words to express how terrible this entire SL has been) 1/10
3. Mick Davies being killed off (the only semi-decent new thing to come out of all the mess that is season 12 and they killed it) 3/10
4. The murder of 'The Colt' (why bring it back at all?) 0/10
5. Lucifer and Crowley squabbles (watching Crowley spank Lucifer was fun but Lucifer being a thing altogether is a no for me) 2/10
6. The brat that is Luci's baby (bad enough that Lucifer's still a thing, now he's reproducing) 1/10
7. Toni Bevell (I'll never forget how Dabb wasted valuable time on her drinking tea, and boarding a plane but couldn't have the leads have a conversation about the bomb that was suppose to conclude the big mytharc of the season. It was the beginning of Supernatural: The I'm Still Writing Bloodlines, Suckers! Edition) 0/10
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I don't mind
8. Ketch (I like the actor) 5/10
9. Kelly and the princess of hell (Kelly's part of the boring Lucifer SL but I liked the actress who plays Dagon) 4/10 because Kelly brought Dagon's score down
10. Cas and Kelly walking off into the sunset (I like when Castiel does his own thing and doesn't bow down to the Winchesters' demands) 7/10
11. Ketch and Mary sleeping together (love that because I think Mary's a soulless, withholding, manipulative, pathetic excuse for a mother who sold her children out like a true Campbell and who isn't half as smart as she thinks she is; a psycho like Ketch is exactly who she belongs with: trash recognizes trash) 8/10.

[b]What didn't you see coming?[/b]
Mick dying as early as he did, I thought he'd make it a little further.

[b]do you have your own?
- Mary.
- Mary.
- Mary.
- Mary.
- Mary.
- Sam and Dean being demoted to guest star status.
- Sam and Dean being irrelevant.
- Sam and Dean being dumbed down.
- Sam's 'I want a world where I won't have to hunt' rash flaring up again. Haven't we been over this? Several times?
- Sam not making sense whatsoever in his reasoning for following the BMOL.
- Dean not listening to his instinct that the BMOL is basura and allowing Sam to drag it into this BMOL nonsense.
- Sam and Dean's relationship being completely neglected.
- Dean being written as an amateur hunter who's about as effective as Garth is, that same guy who whooped 3 demons with pots and towels in "First Born". Yeah, okay.
- Dean's past as a Knight of Hell and True Vessel of Michael being erased while we're constantly reminded of Sam's psychic kid and angel/archangel vessel past.
- The melodramatic speeches about you're family, you're family, everybody's family when the actual brothers of the show are barely allowed to interact and have meaningful dialogue and scenes since "Alpha and Omega".
- Billie dying instead of Mary.
- Castiel killing Billie (when is he going to start suffering from the cosmic consequences of this monumental mistake?)
- Too little Rowena.
- What little Crowley we get being wasted on Lucifer : The Rerun Remix Re-release Deluxe Repackaged Edition.

Dislike or despise?
Mary
Lack of Sam and Dean POV
Lucifetus soon to be Babifer
BMOL's soon to be Superwarts of London
Castiel making stupid decisions for the umpteenth time
Every important conversation about everything that is happening being told offscreen
The Colt! The Colt! The Colt! What a weird strange storyline that pretty much amounted to nothing

Can't think of anything I like about this season.

What I didn't see coming
I didn't see Mick being killed off
I didn't see Mary being turned into a cold, manipulative, bitter woman with apparently no parenting skills at all and never did
I didn't see Jared and Jensen being reduced to guest stars

What didn't surprise me
The fact that Andrew Dabb has turned out to be the worst showrunner in the history of the series and that he is still trying to sell Bloodlines to the fans and the network

1. The Winchesters have no POV.
2. The Winchesters know nothing about anything other than Kelly and her baby. Specifically, they don't know much of anything about Mary, the BMoL, or Lucifer still not being in his cage.
3. Lucifer is still alive after the confrontation with Amara.[/b] - more expansive than just Lucifer and Crowley's squabbles, but I'm counting it, because those wouldn't happen if he weren't here. Same goes for his spawn. Shouldn't have ever brought Lucifer back, but they did, and the fight with Amara was the perfect place to get rid of him.
[b]4. They've destroyed Mary Winchester.[/b]
5. Everyone has lied/betrayed Dean, and he's miserable, but it isn't really being addressed.
6. Sam's own issues with Mary aren't being addressed, nor is his new vision of a world without monsters, so we can re-hash the 'I want a normal life' plot with him again. If they're going to go there again, then they might as well explore it and how he thinks his life is going to better or whatever it is he thinks now that he's in his 30s and chose to be a maintenance man for room and board the last time he had a chance at a normal life.
[b]7. Destroying the Colt - They screwed up its symbolism in the show, and then melted it. That was just wrong.
8. Bringing back Joshua just to kill him in a different meat suit.
9. It hasn't happened yet, but I'm betting that I'll be angry about whoever they kill in the final two or three episodes

Despite all of that, what I don't want to see:

They can't just fix their storyline mistakes by killing Mary and the BMoL off and never mentioning them again (although if they did that with Lucifer and his spawn, I'd be okay with that oddly enough). Mary has to stick around long enough to get to know her sons, for us to get to know her, and to redeem herself next season. Anything less will have been the destruction of a character for no reason whatsoever, and will be an almost identical storyline that John had, except we knew John for all his faults. I don't want her to sacrifice herself this year, because it's too quick and clean of a way to deal with her.

The show can't just kill Ketch and company and drop it, because the BMoL are a whole organization that is run by people like Hess. What I wouldn't mind is if they kill Ketch, that tattoo comes into play when we find out he's really part of the Thule, and he comes back to life, indicating that the BMoL are run by the Thule. If the BMoL are actually seen by our main characters as villains they can fight instead of idiotically joining, then there might be something there if the show starts writing for our main characters as main characters next year.

ETA: Surprises: I haven't really been surprised by anything except that maybe Dean went along with working with the BMoL easier than I would have expected or liked. And I've bolded the ones I think line up with the ones you asked about, Bella.

Agree with others. A couple of nitpicks.

Pacing [/b] - never before have I picked up my iPad and played a game during the live broadcast. I do this a lot now. No matter how limp the plot in earlier seasons, the episode usually skipped at a brisk pace taking us along with it. Sam and Dean always in the thick of things, not being - you know - stupid.

[b]The brothers in the dark[/b] - Not a smart way to plot a show when audiences have the facts and the main protagonists don't. Sam and Dean had no trouble finding jobs before. Now the Brits find jobs for them and off they go like well trained little puppies. So irritating and OOC that S&D accept the BMOL at face value.... like, why?

[b] The Baby I cannot bring myself to care. Good baby or Bad baby - if they take this SL over to season 13... well, the season is doomed. I'm thinking maybe S13 should be all MOTW. The arcs have been terrible for 2 seasons.

Can't write more as I'm depressing myself.

ALL OF THE ABOVE!!!
I especially hated Mick finally seeing the light and starting to redeem himself, and then getting shot in the head behind his back. Meanwhile, we keep waiting for Mary to do the same, and we get nothing. I would love to see HER get shot in the head, but I'm thinking that Ketch won't be able to do it.
And what was the point of Joshua's death? The characters that I enjoy? DOOMED.

Have been on holiday so only watched it last night – agree with lots actually most of what others have said but my main nitpicks are (just my first thoughts in answer to Bella):

Too little Winchesters – if Jensen and Jared need more time off then they need skilled writers who can make it not seem obvious AND Dean and Sam need to be part of and involved in the stories.

Hate that they wasted both the Alpha Vamp, one of my favourite baddies and then the Colt for fcks sake what was that all about – get rid of anything that the fans like grrrrrrrrrr.

Sorry but I can't wait to see the back of Mary, don't care if they kill her off quickly not interested in seeing her make up with her sons, she doesn't deserve them so I am quite happy to just forget about her.

Then of course my very strong dislike for the BMOL, this actually is a huge problem for me as I can't see how they get out of this one, unless they do a Leviathan and just ignore them once they have been killed of in the US????????? and the weapons and so on, just hate hate it all.