The board now takes both of the ECS 2mb Agnus chips (A500+/A3000). The board can run kickstart 3.1 with no issues or your own customised kickstarts. A clockport could be added, there's a couple of places it could be taken from. His schematics are fantastic. You could build your own Amiga design with them. The A600 IDE design is far better, as used in a number of A500 expansions. In the future I do plan to adapt them to ATX for my own purposes.
Considering what happened whan someone uploaded the original files to aminet, I'd encourage getting GB's approval before doing more designs based on his schematic. We have plenty of Commodore service manuals to work from the same way if he doesn't.
And, like some others, I'd like to see new designs go AGA, perhaps with Prometheus built-in (non-profit style only) or Mediator bridge slot for PCI rather than ISA inline on big-box type boards. And 040/060 socket would be nice too. Actually, I'd probably prefer an A3000/4000 CPU slot over a CPU chip socket, and then we could even get CSPPC for OS4. AGA would be a big do over from scratch anyway. And then at some point consider Minimig-AGA in an FPGA rather than actual Amiga chips, once Minimig-AGA is available from Yaqube and MikeJ. (I'm assuming that will be GPL as is original Minimig)