I would like to see separate, physical volume controls for splits and layers. There's nothing worse than having to search thru screens to find faders. Put them in a row with the master volume. I may have seen something similar on a keyboard or two, but nothing consistent. That would help me a lot.

Basically, the more dedicated (even a/b) buttons, knobs and faders that eliminate screen pages would be helpful. Minimize numeric pads in favor of alpha dials.