I don't really mind Vexen. He's pretty creepy though, but his weapons cool.
I found COMs music to be the best out of all 3 games. It had perfect remixes of the KH1 songs (Destiny Islands theme was fantasticly done), and the new songs for the Organization battles were really good.
Awesome, i liked Zexion's English voice. And yay, Demyx! I just keep getting more anxious for this game to come out already, its gonna be great! =D
Online mode would definetly be a fun mode to add, and would give some more replay value. I'd love to see a "Hunt" mode where you and 3 other players on Wifi can look for and fight each other. Unfortunetly, i don't think they're gonna include an online mode for this game =/
I thought Epcar did a lot better of a job in Re:Com then he did in KH2, but Zane IS Ansem to me. He was the perfect voice for Ansem.
Probably Marluxia and Zexion. Both have awesome powers and will probably be really fun to play as.
