I have another suggestion, which seems logical to me, but feel free to object. I think it may be beneficial to automatically lock faders when entering the Step Program mode. Pretty much like automatically executing the F9 key press.
The reason for this is that the primary purpose of the Step Program is adding/deleting steps and editing the existing ones. I see editing sounds rather as a secondary function which is evident because slider movements are not depicted on the display while in Step Program mode.
Although the way it is implemented now allows more options from the start, it also pushes more responsibility to the user who has to be aware of the implications of moving sliders, which often happens by accident. I believe this function should be off by default (the F9 key will indicate though that it can be activated).
P.S. Why did I write all this? Because I moved a slider by accident, destroyed my slice I didn’t realize what happened! 