You can make the UserTracks soloist in particular scales by using "Drum" in the name. Then when Bar 2 Bar regen is added (maybe this year) and change UserTrack at any bar with F5 things will be easy.
You can have a lot a separate SGUs this way it will be more random and not playing the next lot of bars in the one SGU but choosing from the other SGUs.
Any phrases can be kept together in the UserTrack bar settings.
You can set any parts as A,B fill, post fill, ending.

Now with Melodyne 5 it will get the chords and scales, the chords can be exported as midi > Lead Sheet
So you can scale and chord out the RealTracks to make a UserTrack template.

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