Arguments about the costume aside, I just don't really see this movie being all that interesting.
This movie is going to suffer from the same problem Carol does in the comics: who gives a shit about her? Disney and Marvel keep TELLING us she's great, but at least in the comics they haven't SHOWN us her being anything but an alcoholic, a tyrant, and a sociopath. That's why her book has had to be relaunched four times now. She's a shitty character.
Maybe Feige has worked his magic. I'm not sure. But I can't fathom this idea he and others at Disney seem to have that she's going to come in and immediately wow us the way Iron Man, Captain America, Thor, Star Lord, and others did. Those guys earned their place in our hearts because they were well-written, decently-acted characters who had great moments across multiple movies. Is Carol going to live up to that? Because if she doesn't, her being the big solution to Thanos is going to seem shitty.