I did not have gale in the party during that. Have to try that.

Thing is, i think it has an impact on the scene with Dror and his talking to the Mindflayer corpse later. If you kill it outright i think all is black, but if you actually talk to the wounded one, you will be recognized later. I wanted to verify that out of curiosity.

As for conversations i am still in favor of having our main character initiate all conversations with options for making use of the others for their special skills.

For example, if you are no Rogue and talk to the guy guarding the Zhent hideout below Waukeens rest you could use Astarion beeing a rogue (if you have him in party ofc):

[Rogue][Astarion]: Use Rogue sign

Pretty much the same as when you get options for your race or class. Implementing that should be relativly easy since there has to be no change to anything else.

And if a party member has something else to say they could leave it like it is. We do have the occasional voiced interjection from party members here and there after all.