Not actually my suggestion, but read this idea on a CQ user group.
Basically the ability to swipe/scroll the screen sideways to view the entire available channels rather than tapping the various screen groups as we do now.
I manage with a group of 8 in custom screen but is cumbersome if you need to quickly access other sections while playing as well, and a swipe L/R would make it more intuitive when mixing on the fly as I do as keys player and “ Sound guy too”