For me it's a big disadvantage of the game to not be able to choose the char who is talking. It's not so much for the actual results, more often than not it is not important wether you have higher Charisma or not. It's for immersion because I see the party as a group of equals. It is nonsense to assume that people like Shadowheart, Lae'zel or Gale would simply let "Tav" be the leader, even if he is bad at things, just because he/she is so "player-ry??". The group would choose the best option, so the player should have the option to change chars during dialog.
