I like that Snarry Games isn't anonymous. There are so many anonymous fests and exchanges, I like that with this one you can link to your entry from the moment it's been posted and show what you made. I don't really see the point in it being anonymous, since there's really only one receipient...the Snarry part of fandom. But perhaps it's because I've only participated as an artist, and we really can't be that anonymous. ;)
Collaborations could be fun, though I've never tried collaborating with anyone before. But as I said in a reply to iulia_linnea, then I'm just afraid that the well known artists and authors will be picked really fast or be the ones everybody wants to team up with, and then us not so well known will be viewed as a kind of left over "second option".