It doesn't follow the universe set out in the first film? There's a slight difference between comparing people who complain that it's not like the universe from other films in the series (which Trek claims to be) and different from the Iron Man in another medium. Yeah, I'd like to see it be as close as possible but I can expect some changes too (do the Trek folks expect the movies to follow the Trek comics? I doubt it).
I'm really looking forward to this one and hope it's good and doesn't follow the path of so many other superhero movies, where they try and get all "cool" with the villains and stuff, and pack in way too many characters in sequel after sequel. I don't mind the replacement of Rhody, as I didn't feel he really fit the part very well (but he wasn't horrible either). I like Cheadle, and think he's got a little more in the acting chops department, but I wonder if maybe there's someone even better out there. Hmmm. Thumbs up for the movie, though.