Firstly, if you're open to integrating this with a computer, get an ES9 and connect your physical modules with VCVRack. It will open up soooo many ways to learn. I do all my mixing and end of chain effects in VCV, including the amazing and free Supermassive reverb plugin from Vahalla. If you're dead set on a physical only rack, you could even sell on the ES9 when your case is near-full. You'll find a buyer in about 60 seconds after listing it on Reverb.com
Cool idea. I'm definitely not opposed to some computer integration. Still learning my way around VCV, it would be nice to augment the rack, as long as it can stay predominantly physical. I'll have to look into the ES9.
Secondly, in your case, you need to increase the randomness (actually the Buchla random you had before would be ideal). I would definitely add dedicated Sample & Holds and put them next to your noise module. Would also add some free running chaotic random CV like a Sloths. Also consider at least one buffered mult.
Sloths is new to me. Seems like a bit of an unpredictable beast. Absolutely agree on needing more randomness though, so I'm happy for the suggestion. I often use the O_c for its shift register/turing machine apps, though I've been on the search for a dedicated piece to replace that and free up the module for other things.
The other thing I think you need are more ways to attenuate, invert, offset. One key thing about generative is being able to 'tune' your CV in order to precisely tweak that generative randomness into something listenable. One thing you could do is swap some your VCA choices with ones that can VCA but also do inversion and offset. You have a bit of that, but IMHO you need more.
Finally I would sprinkle those utilities all around your case.
Thanks so much for the advice!