There are multiple ways this can be handled, for example if you have a certain Gith female in your party when you encounter her own folk, she takes over IF you let her.
Now for those situations, if a certain companion is more suited, then I would like more of this, no issue in taking a slight bac seat and letting it be about that character's story over mine. You still get to pick the options after all.

In other cases it would be great if one of the checks you could pick would be based upon one of your companions. If it's obviously Arcane and you have Gale with you, the Arcane option should be based on his observations7knowledge vs yours (as long as he is with you, i.e. in MP actually in vicinity of the conversation/event), At that point that character should take over in the conversation or interject cinematically.

Sounds like we might see more of that going forward, so a definite +1 from me. This should be about the PARTY and not just your character.