I'm replaying BG1 with the NPC banter mod and i'd trade Gale, Wyll and Astarion for my man Kivan so quick. For Imoen too. Wisdom and (non-malicious) light-heartedness are definetely missing from the current companions, especially the former.
I vaguely remember Kivan and Imoen and the great banter of the party. Might have to buy that one again and replay through both it and BG2