That's a lot of reasonable suggestions; clearly, you use Genos live a lot;

it's true, multi pads are hard to stop; also, they are hard to start with right timing... really should be improved (I don't have Genos, but I have PSR-SX900)

You probably know that there is V2.1 update, now you can assign the Tempo as default to the Data Dial in the Home Display.

Again, a lot of good points. I fear, though, that Yamaha will continue to focus more on the "fun" part or the "selling" part, rather than on the professional angle.