I voted for the 'classic' angst vs. romance. I do like the idea of AU vs. AR but I have come across people that really dislike AR and I wondered if it would be a fair fight.
I also prefer keeping art and fic separate. Although there aren't as many fests over the summer, all the Christmas ones have shown it's hard to keep up with too much at once.
I can see the benefits of anonymous works (some stories certainly must get more attention based on the author) but either way is fine.
I picked May for the month of big games, although perhaps (late) August would be better as people would have all summer to write. I think it's just difficult when so many people are away over the summer-early August is often dead.
Limiting art/fic-I said no, let them go nuts. Every time I consider limits I think of the really long fics, especially from the Snarry Games, and wince at the idea they would have been cut short. If someone's muse is taking them on a long journey, it's hard to want to clip their wings.