And you folks want to add in additional lines for every single conversation to account for the possibility of any combination of Astarion, Gale, Shadowheart, Lae’zel, Wyll, Halsin, Jaheira, Minsc, or Minthara to be able to interject?
Not at all ...
Since they allready exists, all we want is to merge them into one.

//Edit:
It would obviously help if we would have actual diagram od dialogues used ingame ...
Instead Larian only showed us
few yellow boxes with lines on picture of Rafiki.
But as it seems ...
If the game would check for your tags, every time you would swap a speaker, it would be doable.
And i still cant find even single "permutation" added.

The main problems remain tho ... Camera (huge one) and Multiplayer (also huge one)