Spent the past few days deciding ways to implement my LP for improv performance by mapping its regular layouts. A few tips I've discovered:
In User 1 and 2, the arrow buttons are available as momentary CC presses (also up and down in Mixer if you don't think you need that), but the Super interesting thing I've discovered is that holding them down while switching to another page leaves them pressed. I tend to use them for the xfader or quick fx. Sometimes I want to stay on the B channel, or keep an effect on while I play.
Instead of creating a midi channel to send led feedback to User 1, you can group that instrument and add 'External Instrument' as a chain. Then assign that device's on/off for sending the led
In live performances, I don't always have access to stereo output. This frees up the Pan page (I just went ahead and assigned a harsh Resonator to the entire page for now. Weird minuscule delay feedback noises).
Also that frees up my Pan row in the Mixer page
for now I have it mapped to synth transpose Range: -5 to +7
On the Vol, Pan, and Snd AB pages, the 'stop, trk on, solo, arm' buttons are free to assign. They could be handy either for something you'd want access to while you're lost in one of those pages, or better yet, triggering parameters directly related to those pages (delay types or reverb freeze or something)