+1 to Thom's suggestions. Perhaps another variation on this idea is that a U.I. preference might add this behaviour to the existing beat reset function, which occurs either by midi cc or by retriggering the current beat.
"Possible fiddly workaround for resetting mutes on a per beat basis:
On the Tempest set 'midi remote pad play' to control mutes. Then when required, trigger a pre-recorded sets of notes from an external sequencer to reset Tempest mute status."
This is something I've wanted to do for ages, because then we can basically get 16 (or more) patterns out of one beat. I'm happy to write and share a Bomes MT or Puredata patch for this, but first the Bank B external midi control bug needs to be acknowledged and fixed. Please could anyone interested in this issue help confirm the bug? I've reported it on the bug thread.