Preliminary layout (tested everything before outside of the board), this should absolutely rule for me:
Wooden strips need to be sawn to fit things better and I need a new PSU, though, so things aren't cabled up yet (cabling is amazingly easy compared to my loopswitcher board). MS-50 is sitting in the second GT loop, I'm sure it'll be useful at one point in time (used it more often than I thought I would on the old board), really a neat swiss army knife (and some FX sound really decent, so I may as well use it just as an additional reverb here and there).
Biggest issue, believe it or don't: The Stomp's power connector. I have no idea who had the idea to make this the *only* more or less widely used pedal with a barrel plug and an inner plugsize of 2.5mm (rather than just using the standard 2.1mm), but regardless of whom it was, he/she needs to change his/her medication.
Now, I do have several of these plugs readily soldered onto adapter cables, but none of them is angled - and I'm having a hard time finding an angled plug of that stupid format (unless it's from some dubious chinese maker on Amazon, will probably need 3 weeks to arrive and fall out on first contact as the plug will be too short...), so in case someone knows a decent one, I'm all ears.
In case this proves to be a great rig, I'll build a new board for it, making dedicated measurements and using something not requiring an L-lid (which this one does, the L wasting some space).
And fwiw, the GT will be easy enough to pull out, all cables will provide enough leeway to pull it out some centimeters and do the plugging. It's fixed by a wooden piece in the back to make sure it doesn't slide around in that direction and it'll be secured on top with a thick piece of foam, so the lid will hold it down suffienciently (and before you call that an unprofessional solution, it's one that worked for me over decades, I always had units that I wanted to pull of their respective pedalboards every now and then).
Whatever, in case the new PSU will work great, this should possibly be a most amazing setup providing at least all basic tones I could ever dream of (minus a fuzz, but I will likely order a VS Audio Pandora Fuzz & Boost more or less soon, which will then replace the Magus).
Super excited already...