Well, I wanna see what the other Baldurs Gate players would say.
Same AD&D rules (2nd edition).
NPC's with relationships.
Possibilities of soloing the game.
HLA's.
Moddable Engine.
At least mention of every Child of Bhalls companions and perhaps mentioning some of the most famous mods (like, someone asking you if have you heard about Pontifex, or telling the tale of Chloe or something)
More Races (Drow, please)
More Classes (perhaps even from the mods. Man, them modders must win something after all)
DECENT HISTORYLINE not that ToB kill your brothers amen thing.
That's what I thought first. If they can dream, we may put it on screen.
Please, post your wishes.