I think, this could be useful (not only for you).
So… Inspired by your question, i made a rackspace with a knob matrix of 4 banks with 8 knobs each.
It needed some some lines of GP-Script code to make everything work, but i think it’s worth the effort!
EDIT: I made a separate Thread in the “Scripting With Gig Performer” sub forum - that might be a better place for it!