I think this is quite unique, I haven't seen any other games where you can do that - so I'm not sure why you are saying games are doing this?
I can't think of any offhand. Although in things like e.g. the Dragon Ages you can choose any current party member to lead, if conversation is initiated it's always with your primary character. That said, it does at least have the random banter between other characters which is often quite entertaining.
