Thank God no Portman!
I like her but not as Jane! There is zero chemistry between them and her personality/character doesn't fit in the movie.
I always liked Lady Sif and Thor more because of their chemistry and she is in his league.
Because of the annoying Jane I don't really like Thor movies, there is too much focus on earth and comedy. Just think of all Marvel movies this one is the weakest. Wish it was more like captain America in tone.