Re: Changing the roster for Avengers 2?
There's nothing wrong with having Cap lift and/or wield Mjolnir since he has done it in the comics. By the time Avengers 2 rolls around the MCU will consist of eleven movies over seven years. Obviously the characters won't have hundreds of appearances behind them as they do in the comics, but they will all be thoroughly established by then. Showing that Steve Rogers is worthy under the conditions of Odin's enchantment will not diminish Thor in any way. We know to whom the hammer belongs and it will always remain in his possession.*
* Unless Beta Ray Bill gets the hammer later on. In which case, I quit. I hate that ****ing goat.