I've been making changes. I guess this is still a work in progress.
Latest version: 
- I replaced the loquelic with a Plaits clone.
- I got rid of the midi module since my Deluge and Keystep both have multiple CV out and the deluge also has gate out (x4)
- I added usb power for the keystep and if needed for the Deluge
- I replaced the rings with a nano clone to save money and space
- I replaced the mixer with a channel that can do 3x: L, R, and Stereo
- I added a nano motion (maths clone)
- I added an abstract data event boss
- I expanded the case to 6u 104hp (was 6u/84) (this current build will still fit in an 84hp case with some room left over (16hp total, not much)
- I added a milky way for reverb, among its other effects
I am seriously considering buying a rail/power kit and building my own case to save a few bucks and have that pride of DIY.
How's the system looking now?