This is really exciting! I saw the touring production (that I hear pales in comparison to the Broadway one), and it was a magical experience!
Emma Watson is an excellent choice for Belle!
Gaston- Chris Pine or James Marsden (may be "been there done that" though)
Beast- I don't know. I a lot of the choices in the thread are too old. I read a response in the thread saying that with movie magic they could make them look young "like Into the Woods". I must say that Streep looked very young in Into the Woods, and that was due to a combination of an excellent costume, herself and mannerisms, and the blue lighting...nothing else, I think. However, that worked for her character....she was not playing a love interest to someone 20 years younger than her. Like, Hugh Jackman? He could pass for Watson's father. *shrugs*
I don't know how they would do the objects...CGI probably. I agree with NPH as Lumiere...how about Timothy Spall as Cogsworth? Yes? No? Maybe so?
"It will probably be easier to adapt than into the woods because Disney won't be trying to get rid of act 2 in this one"