Great project, I for one would love to play with some FPGAs but for the life of me I can't think of a project that would use one. One of my pet areas is development tools and a logic analyser would be a logical choice, but I think that's well covered 
Emulators are another pet area of mine, maybe the equivelant of the "bond out" chips we used to have to gain access to the internal busses for hardware break points etc.
As for the CC license, I was going to go for BY-SA-NC but just couldn't see how to implement it. For example if a one-man band wanted to knock up 20 of my widgets to sell then I've got no problems with that. But if HP take the idea and make 1000s then I should get something for it. But how would I enforce it, especially if the design is ripped off by someone outside my country.
In the end I decided what the heck and I am releasing everything I do under BY-SA, realistically what are the chances that something I do will be the next Arduino anyway
I do have one advantage though, and that is I don't have to feed a family.
Rob