Honestly I would have to say at least 50% of the features &
75% of the sounds & on-board styles I never use. I just pick & choose out of all features within and only use what I need to perform and create music for my needs. If I record backing tracks or some studio work then I dig in a little more to use the editing tools available.
I know there is so much more inside and will probably never have a use for it, but if I don't really need what I seldom use although I know how. How about you?