I know this is an old thread, but I completely agree, sfx70.
I'm probably repeating you here, but in a 4 snapshot, 4 stomp situation, I would also like to be able to have some stomps exempt from any 'interference' from snapshots.
It could be a Leslie or something, that I'd like to add on the fly for some color, but when I switch from snapshot #1 to snapshot #2 (for some more gain, maybe), the Leslie is suddenly off again.
It would be nice to have the ability for some stomps to ignore snapshots altogether.
But for that to work - without getting some blocks in an unexpected state - any and all blocks, that are controlled by a 'snapshot exempt' stomp, would have to be invisible to snapshots, until they are 'released' from that stomp.
How you communicate that to 'the pilot' is something else...