Well, after a lot of learning and work (and painting, sanding, painting, sanding, painting, sanding and painting again, yes, really) I present to you the tight RED DWARF:
The key for this was getting a v4 zynthian but smaller and more space efficient (even if it made the whole build a bit more of a pain. I used midi trs (in, thru, out from top to bottom) to get the size down (type A is the standard now, if you’re wondering wich one i used) and also added a switch to the usb C, so i can turn it of. Also there is a external acces to the sd card in the works, but i’ll have to design my own pcb by the looks of it!
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I also kept the ins and outs at 6.3mm, just because i prefer it and shrinking further is not possible due to some other components.
also the top left thing is a pedal connection, trs to be able to put 2 with a stereo to mono splitter, that for now is connected to sw4 in the screen but that i plan to move to some of the free gpio pins
(the fan connection is temporal, where those wires go is where the hifiberry goes.
I made almost all of these designs that i could make available if you wanted them.
And now to please the 
gods, a quick jam i recorded with the unit and a squarp pyramid:
Aaaand yeah, that’s it for now, thanks for all the inspiration in this thread that led me to do such a build.