We have also suggested previously, and I REALLY want this, the ability to change characters so that if Wyll, for example, has better persuasion, he can take the lead when the time comes to persuade someone, or Gale could be switched in if he has better Arcana, or whatever. There should naturally be times when this is restricted, but more often than not you should be able to switch characters during dialogues.
Example: "Is that you Gimblebock?"
Rogue with +5 Deception switches in. "Gimblebock is hurt. Quick. Open the door.". Instead of Lae'zel who you had leading with her -1.
Definitely agree with this.
I mean, I believe I understand why Larian is not allowing it currently as it could be related to a design philosophy. "You're not supposed to be in control of your companions"-sorta situation, but that logic is already flawed as we can control them as we like outside of conversations (like have Astarion bathing his feet in a flowing river for all eternity). Besides, this design only works well if your companions actively participate in the conversation as NPCs, like they do in DA:O, WotR or even in PoE. In Larian's games, the companions are *usually* quiet unless it is something very specific for their own character story with most commentary happening AFTER the conversation. Obviously there are exceptions to the rule, but in general they are mostly silent giving their "approve" or "disapprove" silently from afar.
Either way - I hope to see more possibilities when it comes to companions participating in the conversation in general - I don't really mind if it is as NPC commentary, or by letting us take control and having them "interrupt" the conversation to say their part.