Thanks for the tips. Yeah, I've had to rule out a few modules based on depth. Based on spec, up to 49mm should be OK, but now I'm worried about the asymmetry you mention. I will hold off on ordering any more modules until I get my current orders in hand and test them out in the case.
With the second 60HP case, I have the luxury of adding a few other components, so I'm thinking a VCA with knobs (Erica Synths Polivoks...?) and maybe the Batumi LFO (which I've seen some glowing reviews of), subject, of course, to depth constraints. Another option is to replace some of the Intellijel modules I've sketched out (VCO, Filter, Mult, and Quantizer) with some other ones which could now be wider. I'm open to any inputs on that!
Thanks again,
Derek