I sincerely hope that the last companion is a full on surprise. A character we haven't met yet. One of the things that disappointed me aboutlearning Halsin and Minthara are going to be companions is the fact that there aren't going to be any surprises. Everyone we're meeting we've met pretty much since day one of EA, save for Jaheira and Minsc, two returning characters. I'd like the opportunity to really get to know a new companion or two. Beyond that, I think a monk character would be great to have. Alternatively I do think that a good-aligned paladin could still fit into the game. Minthara is likely to be exclusive to the Absolute path, or at least exclusive to destroying the grove, which a lot of players aren't going to want to do. So I think given that, doubling up would be forgivable. A dwarven paladin or monk would be my ideal in that case.