I'm pretty sure Yamaha has different fills for every style part, up down and fill-to-self. I like all your suggestions.
I would like to see more totally programmable buttons. Ketron is close with the row of 16 on some models, and the User buttons below the screen, but I would like a row of four or five that will do anything you want them to do, and be able to save them to registration.
DonM