Oh, good...those are the ones that are an utter PITA, people drop 'em into builds because the listings can't be made to show they're discontinued and all that...
The thing that immediately jumps out at me is the excess of mults. You've got an Intelljel buffered mult, a Mutable Links, and an Erica Mix/Split. That's 10 hp of mults in a build that only has 176 hp in it to start with! Now, I know that the idea here is to crosswire several synths, but this is overkill; you can accomplish much of this with inline mults, and keep just the Links for a single buffered mult and the crossmix capabilities. Then I'd suggest dropping in a 6 hp something such as an Intellijel TriplATT or a Happy Nerding 3xMIA to allow you to mix/invert your CV and mod signals. That would be way more versatile than just multing things, because you'd then have more tweakable control over those non-audio signals. And good onya for making sure to put the MScale in to deal with the interfacing issues inherent between "normal" Eurorack and Moog's take on it.
Otherwise, this is actually a fairly solid build, given the space constraints. I would've chosen different modules, but the architecture I'd go for would be fairly close to what you've created here, save for that one issue above.