Quick thoughts from skimming this thread:
1) Love this convo and love the idea of bringing a process approach to the modular world, lots of room for discovery there and I've been trying that myself lately. Along with all the other great thinkers/composers mentioned here, James Tenney has a role here too and his writings are pretty accessible, worth checking out.
2) In addition to everything @lugia suggested I'd emphasize the role of function generators to add some movement, organic-ness, tension, etc to your music. A little harder to channel but they open up process potential in the continuous realm, and there's a lot of them to choose from.
3) Check out the Monome Crow if you can or want to code, it's a cheap and small way to add programmatic features to your rack. Want some quadraphonic melodies? Want a microtonal quantizer? Easy, write a script for it.
4) I know you've said you're not going to get the sax back out @funbun but if you're interested in hearing someone bring woodwinds and modular together check out Golden Retriever, it's really special stuff and half the reason I started my eurorack journey. All their albums are great, but I'll share my fav: https://goldenretriever.bandcamp.com/album/arda-viraf
Finally, I'll wish you good luck. And keep us posted, would love to hear some tunes once you get going!
my tunes: https://stevehand.bandcamp.com/