Update...
Okay, I'm bringing some news...
The unit is working as a dream, and the casing is getting beautiful as I wanted.
Therefore, I used in a live situation and noticed that my wish for 5 footswitches somewhat spoiled the design.
As I will control guitar and vocal effects, I wanted as many footswitches as possible, with the one in the upper left being used to bypass and preset changes.
I thought that the upper footswitch would be difficult to press without stomping another switch together, but instead, it happens with the lower buttons.
Now I'm questioning myself if I close the center buttons, make one in the center and live with 4 footswiches or... Design a 3d printed case! I believe that I can help other that wish to use RPi4 or another similar design.
While it's not decided, I'm working with tweaking some software.
I'm providing attached some pictures, please tell me what you think.
Regards,