It would be very helpful to have a battery warning alert to avoid the Deluge suddenly switching off without warning. I received my unit yesterday and the only time I could try it out was late before going to bed. So I was siting on my bed jamming when suddenly the Deluge ran out of battery and switched itself of.
Perhaps a warning could be implemented where the Deluge flashes all LED's (and does not respond to used action) for a few seconds when there is a certain amount of time remaining (5 minutes?). That would be enough to allow saving and hooking it up to a power supply before it's too late. Alternatively perhaps the Deluge could perform an auto-save of it's current state before it runs out of power although that might be a lot more difficult to implement.