Of course not... However, with the established element of seeking a high degree of plausibility, an over the top presentation of a flying, flaming android and a super-speed vampire, and a guy who looks like Johnny Storm and has the same powers... called Toro, would be a huge let down. If the want to modify the characters to make them more period-plausible-movie-versions of their comic book selves, then I can go with it.
Overall, these movies that intitiated in contemporary times (IM, TIH), represent a turning-of-the-corner in the Marvel Movie-verse... A new age of technology and enhanced human capability. CA may have been precursor to it all, but he should be considered VERY special for his time. Moreover, the current tone of these films does not lend itself to the idea that there was a team of super beings fighting on the battle field 65 years ago. It doesn't even seem as though Cap was very high profile, as Ross didn't expect Blonsky to even know about the Bio-tech force enhancement program (he was visibly surprised when Blonsky mentioned Super Soldier).
Like I admitted, I am probably just beiong a worry wart... but some of these comments get away from what I am expecting in the films. I will admit, to my understanding Thor underwent several re-writes... so this stuff just might be some of the current ideas that are being kicked around, and are not set in stone. I am hoping for proper scale.
So a team of super beings fighting HYDRA, which was not even around yet (much less in Europe), would disappoint greatly.