Do you already have pcb samples built? Or currently all in drawing phase?
He wrote he ordered prototypes

correct.
How many boards u think is possible to run with a single RBpi?
Over 100 I'd say, it needs testing though.
Hi Burnin,
I plan on stacking these boards
side by side on a water block. The horizontal CAN-Bus would be a bit messy.
If possible could the board layout be modified so I could use a vertical 10 pin connector instead of the right angle one?
Looking at the renders there seems to be a few components in the way. If this is easy fix could you please consider it otherwise don't worry as I can work around it if need be.
Fantastic job so far

For the production boards I'll see what I can come up with for your use case.
But the boards are mainly designed to be stacked like in the renders.