Originally Posted by Crimson King
The only problem there is the similarity to Cap, as others have mentioned. His defining characteristic can't be that he's displaced in time.
it absolutely depends on how long he gets lost in time. 10, 20 years are not THAT much that you can't adapt to it, 70 years however, well there may be huge changes that you might miss (in Caps case the civil rights movement, womens liberation etc.)