I don't know how excited I am about this movie. It's not a character or superhero idea that really inspires much hope. So far, Marvel have focused on characterisation, but unless they come up with an equivalent to the Tony Stark character, I don't see what's going to carry this movie. However, they haven't done a duff movie yet in my opinion. They've done some not so good ones, but not a duff one. So I'll have a little loyalty and go and see it.
My prediction for the Marvel Cinematic Universe is that it'll begin to stall in phase 3, and probably effectively die in phase 4, perhaps continued only by TV shows. So, becoming the MTU instead of the MCU. Because the actors playing the main characters will be moving on to other things, so you'll be left with other actors playing different versions of superheroes (Bucky Barnes as Cap, perhaps Ty Simpkins character as the new Iron Man, and anybody, including a woman, as Thor), and people balk at change, as well as some less appealing superheroes, like Ant-Man, Black Panther, and others that don't have such sweeping, cinematic stories. Or those with fairly ridiculous stories such as Doctor Strange or the Inhumans. These things work well as comics, but are less likely to translate well onto the big screen. I hope I'm wrong about this, because the shared universe thing gives me a buzz.