I've got to agree with plragde above...explore what you have until you absolutely know where the gaps are. I did do a quick reordering of what you've got, though:
ModularGrid Rack
In this rework, I split the modulation off from the "voicing" path. For one thing, it puts the non-audio modules next to the uZeus, so that you won't have to worry about induced crud from the P/S getting into the audio end of things. Then the audio comes in with the Waveforms VCO and runs all the way down to the final mixer. Otherwise, this is how a small build can and should work. No surprises, no "Sexy" modules...just very basic stuff with nothing odd about it, with a good amount of usability for exploration AND learning.