No, I really don't - well, maybe I do, but not for this thing here. See, this is going to be a very compact setup. The board is ready to go, too (wait, let me take a pic...).
--- 5 minutes later ---
View attachment 54734
(TXO controller, PSU and DI box to go in below.)
The size is chosen deliberately, as it fits a) in one compartment of a double gigbag, b) in a pretty small backpack, c) in one of my utility cases, d) in a small (cabin luggage size) suitcase.
Anything else and it'd become too large already.
The best I could do to add a small MIDI controller would be to remove EQ and boost, move the GT up, the TXO to the right and sacrifice the dual external switch for a smaller single one. In that case, a Hotone Ampero Control would fit on the bottom end.
Getting rid of the boost wouldn't be an issue in this case (as it'd add some other options) and as the EQ basically only serves as a monitor volume control anyway (don't really need the EQ portion anymore), I could as well slap a supersmall passive volume control on there.
That'd allow me to add a Hotone Ampero Control.
According to Pedal Playground, it'd look like this:
View attachment 54735
As you can see, there's zero options to slap any of the contenders you've suggested on there (and believe me, I considered them all already).
The size of the board isn't subject to change anymore (in fact, I already made it a bit deeper than before). Any larger and I could as well just grab the big GT.