Interesting. This is a problem I've also been at work on, but in my case I'm trying to add onto just a Subharmonicon and a DFAM:
In this case, I DID want the quantizer, because it allows me (along with the clocking utilities) to alter curves coming off of either the Maths or Quadrax into scalar voltages. But with this, the two Moog skiffs with the Eurorack modules aren't intended to be capable of creating sound in of themselves...they're "addenda" for the Moogs. Very nice of Moog to cook up that four-tier skiff frame...
Anyway, the two Euro-populated skiffs are pretty mission-specific...upper is mainly for clock manipulation of the DFAM and Subby sequencers, the lower adds extra mod sources + a pair of VCAs for those.