I finally started to read the docs and I'm looking forward to get my board to start fiddling with it!
I only see a minor
limitation and is that the board doesn't include a ROM to automatically install the driver (excuse me if that's not the right terminology, I'm newbie here), and needing another board to provide the ROM (or, in my case, loading the driver from tape as I only own a 464 with no ROM expansion) is not ideal.
EDIT: to be clear, I already knew that because you mentioned it in the first post. But until I read the documents I guess I didn't understand the implications

I still think is a nice piece of very versatile kit (and I want mine, 29th on the list!); just wanted to mention that I would love it
even more if in a future revision it included a ROM on board

That said from the ignorance, because I don't know how difficult would that be (if possible).