As others have said, the WWII time frame is really the last time they could set it (in the timeline we're familiar with) where a man with Cap's beliefs could be pulled off - and he was idealized even for that time.
I think the most likely thing to change would be the mechanism that gets him to present day.
Another option I could see (that I alluded to previously) is that he comes from an parallel universe where, for instance, the post-9/11 level of patriotism didn't peter out. It stayed strong through today and Cap was the product of an effort in that universe's "War on Terror."
However, I don't think that's going to happen. I think, in fact, that they already set up Cap as being WWII. I'll have to wait until I see "The Incredible Hulk" again to double check this (or if someone else is going to see it soon, pay attention). There's a scene where Thunderbolt and Blonsky (aka William Hurt and Tim Roth) are talking. T-bolt says something about research that had been done - and I think he said it started during WWII. Blonsky replies with something like, "Super-Soldier Serum? Sure. I've heard of it."
I could be remembering it wrong - or it may be wishful thinking - but I'm pretty sure WWII was mentioned in that conversation.
Mike
I think the most likely thing to change would be the mechanism that gets him to present day.
Another option I could see (that I alluded to previously) is that he comes from an parallel universe where, for instance, the post-9/11 level of patriotism didn't peter out. It stayed strong through today and Cap was the product of an effort in that universe's "War on Terror."
However, I don't think that's going to happen. I think, in fact, that they already set up Cap as being WWII. I'll have to wait until I see "The Incredible Hulk" again to double check this (or if someone else is going to see it soon, pay attention). There's a scene where Thunderbolt and Blonsky (aka William Hurt and Tim Roth) are talking. T-bolt says something about research that had been done - and I think he said it started during WWII. Blonsky replies with something like, "Super-Soldier Serum? Sure. I've heard of it."
I could be remembering it wrong - or it may be wishful thinking - but I'm pretty sure WWII was mentioned in that conversation.
Mike