Description
In the current version of the design, there's a cutout in the switch plate to leave space for a Brook Fighting Board. However, it's a very tight fit. There's just enough room for the USB cable to pass between the U and R buttons. And the board must be mounted using something extremely low profile; even the shortest PCB feet I was able to find are too thick, causing stress on the USB port.
One potential improvement is to change the switch plate from its current "T" shape to something like a sideways "J". In other words, connect the U button to the other buttons from the far right, not in the middle. This should open up a tiny bit more space.
One could also mount the U button on an entirely separate tiny switch plate to achieve something similar. This would require more hardware though. One would also need to consider how then to fix the north-south positioning of the main switch plate.