OK...I think this might work better. Case is an Erica Aluminum Travel Case, 2 x 104 hp, fully powered, and I checked it against typical ATA carryon restrictions and it fits perfectly. Here we go:
There are definitely some differences here. First up, I kept the ES-8, but then combined the clocking and logic with an Intellijel Plog. Turing Machine was eliminated in favor of just the Permutation, and the Wogglebug was changed to Make Noise's current version, which saved a few hp. ANA is still in place, but the Maths was changed out in favor of a pair of Doepfer A 171-2 VC Slope gens...which, basically, gives you the same functionality as a Maths, but saves another 4 hp.
Added a pair of Erica PICO EGs, then the oscillators were totally changed in favor of a Mutable Plaits (the revised version of the Braids) and a Doepfer A-111-4 Quad VCO, which gives you your 'drone bank', but also allows for CV control over all four VCOs in various useful ways, as well as submixing down to a single output. Two Erica PICO VCFs were added: a Polivoks state-variable and a regular 4-pole LPF.
Bottom row starts with a Konstant Labs bus indicator in 1 hp. There was a single hp space, and...believe me...having indicator pilots on your bus voltages is very useful, especially in a travel rig that sees a lot of moving around. Drums: kept the Tea Kick and Plonk, but went with a pair of Moffenzeef Dial-Ups...glitch-based percussives...and a 2 hp Pluck, which gives you a Karplus-Strong modeled percussive/plucked-string voice. Added a Bastl ABC to submix drums down to one or two voices as needed. Also, the Tea Kick was switched to a metal plate version; wood's nice in the studio, but you need to keep durability in mind here if this is going to be used on gigs.
Rene mk2 was retained. Then, there's a mono-in, stereo-out digital effects unit, which I chose to tandem up with the same AUX send capabilities on the Qu-bit Mixology. This stereo mixer gives you VCA control over levels, panning, and AUX send levels across four inputs. Last, there's an Erica PICO OUT, which drops your synth level audio down to line level via a stereo 3.5mm TRS jack.
I think this should fit the bill. It interfaces directly with Ableton via either Silent Way (PC or Mac) or Volta (Mac). Everything is very straightforward, very controllable, which you want if you're also working on a live instrument at the same time. As for multiples, get several in-line multiple widgets instead of having them in-panel...this also saves space. And lastly, this was all checked against Perfect Circuit's catalog; even if they don't have something in stock, you can still purchase it while there and PC will ship the module to you when it's in stock.
Good luck!