Then fix the game to not require two characters rather then come up with new way to bypass the change regarding character limits. If all we are doing is creating pointless characters that exist so we have the correct buttons to push, we are wasting time both for the devs and for the players spending time just to push those buttons. Changes should be about driving more interaction in the game not just creating methods to push buttons we once pressed. Fix the buttons.
If some people don't want to push buttons, maybe they are playing the wrong game?
BattleMaster was the "button pushing" version of SpellMaster. BattleMaster is still around. SpellMaster died. Many times. Mechanics are a core element of this game, not "a necessary evil".
Players chose to have more characters, they weren't forced to. You weren't pressured to, either. I never saw anyone go "that guy only has ONE character in our realm, screw him!".
So if by "fixing the buttons" you mean "remove player agency by making everything automatic", then no, I don't see that as a solution.