Well, Affleck already did (in my opinion) a piss-poor imitation of Blake in Boiler Room. His speech to the new brokers was a rather laughable ripoff of Baldwin's epic tirade.
Not knocking Affleck...he just didn't have the gravitas at 28 years old. In fact, it's a testament to Baldwin's brilliance that he seemed so much older and more in command when he gave his performance at only 34 years old.
I think Affleck could nail the Blake role with the age and screen presence he has now.
I think Affleck has gotten better as he's gotten older, but he has a very narrow range where he's believable IMO. He's best playing a smug, aging fratboy type like in Gone Girl, where I thought he was outstanding. He's also underrated comedically.
I don't think he necessarily does dramatic roles requiring gravitas well, although I was pleasantly surprised by his Bruce Wayne/Batman.
I guess I could see Bale as the Baldwin character, with the exception that I think I'd be afraid he was going to murder the entire cast while giving that intro speech.
LOL. Well I was referring to Affleck, not Bale, but he could definitely pull it off. I think he's mellowed out a lot from those days, or at least he controls his temper better knowing that the perception of him being a loose cannon is out there.