I think the more options, the better! What have you got so far?
All I have done is make a library part for the Avalon chip in Kicad, so I haven't really done anything so far.
I was thinking of designing a board that could be etched at home, but it would be a challenge getting it done on a double sided board and thermal vias wouldn't be doable. I have done plating of vias at home, but pretty much everyone else is not going to have that ability. I'm still trying to think of a decent way to get around the thermal vias. Of course, I plan on making a version that does use thermal vias that can be manufactured at a PCB fab if desired.
But, the whole point of this thread was to gather any suggestions on particular features they would like to see in my board design that may have been overlooked by the other projects. I know that the other projects pretty much have everything covered already, so there may not be anything worth suggesting. If that is the case, then I will just work on my own design and release it when it is finished.
Also, I am not intending on selling any boards. This is just another design that I plan to make public and anyone can manufacture it if they want.