It would be great if you could have some different Beat Snap type settings for the Record Button. Thus you can hit record, wait for the 1,2 or 4 beat phrase to begin, perform your loop, and hit again record to trigger it to stop recording on the beat. Another setting could be to beat snap on the first Record press and then automatically stop recording after a set number of beats/bars.
This would make it a lot easier to record a loop while you are performing, and then immediately start using it with the timing intact.
Thanks,
-mike