Henchmen Interaction
The people that follow the player in NWN2 are going to be full-fledged companions (not henchmen for hire). And yup, they're going to interact with each other, you, and many situations. It won't be non-stop chatter, but enough so that you get a sense of who they are.

More : Henchman to me implies a certain amount of subservience. To me the characters in BG2 (and games like it) are the pen-and-paper terms equivalent of the other players in a gaming group. The D&D term henchman was used to refer to NPCs that followed a particular PC around. Which is not the type of vibe we're going for. I think "companion" is a far more apt term to describe what we're shooting for in NWN2. The game's companions make up the rest of your gaming group. Each companion has their own backstory, personality, and rationale for adventuring. You're the leader and make the calls, though, but that happens in sit-down games, as well. I know it's a fairly semantic point, but we're going to be handling the people that travel with you significantly differently than the original NWN1. So using a new term for them seems apropos.