Sorry to have so many little posts on this Panning topic - but I’ve been experimenting and learning what would really be the most valuable (and maybe easiest to implement).
I think the biggest impact of Panning is BEFORE RECORDING of each track or overdub, as it lets you adjust the placement of that new audio in the stereo spectrum. Panning of already-recorded tracks with overdubs limits the stereo placement options, as the audio is already merged.
Using external panning, I’ve made recordings of 2 tracks, with, let’s say, 3 overdubs each. If that was just flat stereo, it’d be OK … but with pre-record panning, I can have audio in 6 different places in the stereo mix - making it much better.
Pre-record panning might be easy to implement - using the Loop Volume control (when the looper is idle or in playback mode, not in the Mixer) to display a L ----±--------------R image. Moving the footknob slides the + to the right spot in the spectrum, and that’s where the next track or overdub will land in the Stereo.
This would remove any need to pan in the mixer during playback of tracks … as the panning is already done, the mixer could stay focused on volume levels.
Not trying to tell you what to do – just wanted to provide something concrete about a requirement that’s kind of fuzzy to nail down.
You’ll roll this in with everything else you see and learn to figure out what’s best.
Cheers