I agree the looper volume should be able to be faded or morphed in a live situation.
Also I can see reasons why the looper location should be part of the Rig Menu rather than System Menu. That way you could decide on the location on a per rig/performance basis.
Agree completely, you could also use different volumes of loops and (hopefully) fade out length.
I just finished a 6 months contract in a hotel, playing mostly acoustic with loops and fading out manually on the mixer