Very nice! 
 
Just as another feature idea - what do you think about a "complete track clone" feature?  
 
It could be activated by pressing any available hotkey + "Copy"  - it will copy all of the active tracks´ notes, length, mode and associated settings to a buffer (e.g. on SD for main memory conservation?) 
This buffer, including full track information could than be pasted on to any other tracks, when the same hotkey + "Paste" is pressed. It would be nice, if the paste would also work on a group of active tracks, e.g. tracks 5-8 in group 2. 
(I am aware, that the note copy/paste features are available, but cloning would affect "everything"). 
 
Personally, I would use it a lot, as I find myself quite often adjusting multiple tracks to use the same midi-out and channel, have force-to-scale on, use the same pattern type and length, fx, etc. 
Also, having a prepared fallback "on disk" buffer would allow for longer and more risky track editing, involving many steps not only on the notes, but also on track parameters - if the editing fails miserably, you can "paste" and try again. 
 
Greets and thanks! 
Peter