If you've ever played with electric power simulation programs you might have once, just for fun, looked at what happens with an absurdly high voltage power system and a very low KV motor. You could fly all day on one charge and the system would stay cool. Obviously, we can't do that in practice but it does make a point. I'm sort of surprised you guys at the top levels haven't been playing with 12S power systems.... or maybe there is a rule against that?