It's getting there, yep...I still think the Maths would be preferable to just the single VC Slope of the Contour because of all of the internal routings you can do with it to reconfigure it in some very complex ways. Why not pull the Contour in favor of a Doepfer A-140-2 or an A-141-4 for some additional "proper" ADSR EGs? Also, you might consider a comparator or two, since adding those plus a Maths would give you a decent compliment of modulation sources on which you could use the comparator(s) to fire gates when the modulation curves pass given voltage points. Put this together with some logic to work with the Varigate, and you'll have lots of rhythmic mayhem possibilities.