I think Larian should rather allow us to switch talker at any time in conversation, would be thousand times more usefull and it would not really matter wich member of the party started talking, if anyone would be able to respond.
Yes. That's what I would prefer Larian to work on, as my first choice.
If they can't do that, designating a companion to be the party's Face would be my second best choice.
If they can't even do that, having the PC be the Face by default would do ... sometimes. But not all Player Characters are built to be the Face, whereas at least one of the Companions, Wyll, is built for it.