i think your rack is a little light on vca's.
also, attenuverters seem like an essential function to have a few of.
do you have already thought about switches and how you could incooperate something like the doepfer A-151 into your patches? seems also like an nice basic building block to have.

Thank you for the input.
Would you recommend a duplicate of the dual VCA that is already on the rack or should I find something a little beefier?
Also, could you explain how it is light on VCAs? I honestly don't know how to tell or what the consequences would be.