1) Lose the Multiplicity XV. You won't need it. A massive buffered mult like that is great if you're talking about a 15+ VCO rig, but this isn't going to ever come close to that. Right now, your build shows a DixieII+ and a Plaits, and you can send a CV to both with a plain old passive inline mult with no risk of CV sag. I know you already have this on hand, but it's way off in the overkill zone for a small build and you're losing hp to it.
2) Lose the Quad Invert. Your Triatt has attenuverters already. Plus, it's always better to have attenuverter control over inverse signal levels than dedicated inverters unless there's a specific reason they need to be there (such as providing four inverters for a quad envelope gen).
3) Consider losing the OR module. I don't see enough gate sources here (Pam's notwithstanding) to warrant it.
4) This NEEDS some noise/random source, sample & hold, ring modulation, waveshaping, and especially envelope generators to be a functional, proper synth. You also need some sort of stereo mixer, otherwise the capabilities of that Pitt output module are wasted.
5) Consider doing your effects outboard for the sake of hp. An Erbeverb is a nice thing...provided you have 20 hp to spare and with what's missing here for your stated purpose, you don't have that much space to blow. You might also consider going to a much smaller reverb such as Purrtronics' spring emulator which would also help you "stereoize" your output signal if you find you don't have the room for a proper pannable stereo mixer.
6) Consider using an Optomix instead of the LXD. This way, you have manual level and LPG frequency controls in addition to the regular CV ins, which then makes this a better/more controllable candidate for mixing the two LPG signals to a mono out.
7) Lastly, add a more complex VCF than just the Wasp. It's a great filter, sure, but you'll want more. My suggestion would be Tiptop's Forbidden Planet, something of a Steiner Synthacon VCF clone. Very capable and very interesting-sounding, plus you have multiple filter responses rather than just the lowpass the Wasp offers.