I have recently picked up finishing the design of the reach B0, as I am found myself needing it. though seeing as there are more people in the world than me, I thought, I would ask you guys, the community what you actually want on the board.
Disclaimer: this poll is only to gain an idea of what I should put on the board.
(This won’t be mass produced, though I’ll publish the final design, and you can do what you want with it.)
I would suggest that you add necessary peripherals to support:
A) Minimum 3 pcs of TMC2100, preferably as many as fits - cost can be limited by not installing all of them
B) Minimum of three extra servo channels so we get a total of 5, for future use (f.ex. build plate adjustment, Z-probe movement, filament changer, filament feeder, build plate carousel for series production, enclosure air vent control etc)
C) 4-port powered USB hub - can be added at very low cost and no use of header signals
Some of these things have turned out to be incredibly hard to accomplish, we will have an update up on the project within the next few days