Time for a couple of stupid questions:
1) if sticking to USB, I could also use tmk usb->usb converter, with a difference of being limited to 6KRO. Any other notable differences?
2) is Pro BT keyboard fully unsupported in a sense that there are electrical/connection differences, or is it unsupported in a sense that built-in BT won't work, and current controller board can't be physically installed into the case? In other words, if you take out the PCB, connect it to the controller, would it work? (lack of (proper) programmability is such a bummer with that board)