Larian could even add a dialogue toggle in the Options Menu to allow the player to decide the extent of the discussion, such as:
Companion Dialogue Toggle
* Standard: Random companion comments during discussion
* Extended: All companions comment during discussion
For people that want to minimize dialogue, they could choose "Standard" which would be the default setting as-is condition whereas players that want to experience the full extent of dialogue, they can choose "Extended."
+1 I'd love this as an option. It's too annoying and time-consuming to have to switch out party members and/or reload. At the very least I hope a mod will be made available for this.