This is already the best looping program I've found for linux, and it has SO MUCH amazing potential. There are already good multi-track recorders. What we need is good live looping software. This would include the ability to set cues and jump to the cues via midi or hotkey.
You are on the right track with this--its the first linux software that has given me chills with excitement, and this is the first open source program I would definately donate to if it has these features. Keep it up!