The request match only the point #6 of my list.
In looper x you can’t set the action order, you can’t delete a loop and you can’t assign all those function to a single switch (internal or external to the unit)
Using midi cc you need at least a 4 switch midi controller and you need to know which switch you have to press for rec/play/overdub.
Without the looper screen opened, you don’t know the “state” of the looper, so you don’t know if the looper is in “play” mode or “overdub” mode.
With a single switch and a “bar” on the screen, you always see the loop so you don’t need to guess the state.