Worlds I would like to see that arn't revieled:
Atlantas (It was a good movie could be a good level for KH2, please note I did NOT mean Atlantica)
Treasure Planet (Its a classic turned futuristic, what more could you want? I'd rather have it than Robin Hood thats for sure)
Star Command (Come now, if not Toy Story why not Star command and fight side by side with Buzz, ER, Mira and Boster?)
Notredam (Well it would work)
Characters I'd like to see that arn't in above worlds or annouced:
Stitch (Come now he should be a summon, he could be like Genie when he fires at large amounts of heartless)
Vivi (We had Merlin as your magic tutor in KH1, why not Vivi this time?)
Kuja/Seymour (We should have another FF villian appear, so why not Kuja and/or Seymour?)
Tifa (She was a cool character in FF7 and could appear in Hallow Bastian)
The Recess Gang (They could have lost their world or be like Hewey, Dewy and Louis and own a store)
Quack Pack Hewey, Dewy and Louis (Come now, these guys were awesome, Quack Pack was awesome I mean Donald had that Hawian shirt and was refered to as Uncle D)
Max (Well think about it, you go the Disney castle so maybe you might see Goofys son Max)
The Weasels (Well Petes here, maybe the Prince and the Pauper Weasels will work for him)
Mortimour Mouse (Hes Mickeys rival, he could work for Pete)
Zidane (We've seen Cloud, Tidus and Leon/Squal why not comlete the popular FF hero collection with Zidane, hey the BHK could know him like Sora knew Tidus or he could go to Kairi and Selphies school)
Icaras (Wishfull thinking, he was the best character in the Hercules series)