The board could be argued to be a plain FPGA developer board.
We sure talk a lot, but I have yet to see a real development community, maybe when everybody with verilog skills has a minimig they can open a closed message board to discuss any improvements and share code.
The only other thing that comes near being Amiga specific is the m68k and joystick ports.
near? I would say "far". The m68k was used on the atari st, the apple classic macintosh, the sharp x68000, the sega genesis and all of the above except the apple macintosh used the same de-9 joystick ports.