The EP-270 is sort of a tried-n-true thing, because that angled panel setup is pretty much one of main features of the ARP 2600's UI. It allows the system to be at a comfortable playing level while still keeping the controls face-on for easy reading. I wish you saw more of this sort of cab in the Eurorack environment instead of flat skiffs/cases or purely vertical ones.
As for the Moog cab idea, actually, that's not a bad one. Assuming 4 hp for a uZeus in an empty Moog skiff, that would still allow 56 hp for a "sidecar" cab of Euro stuff, and it + the Moogs could then fit nicely in one of the Moog 3-tier frames. I'd suggest the sidecar go in the middle slot, also...easy routing of those signals to either the DFAM or Subby. DO note, however, that you'll want to locate an Erica MScale in there as well to deal with some CV oddities that the Moogs have that aren't 100% Eurorack "kosher".