Personally I think it's a great idea although I don't have anything available to contribute. Well, I take that back. I have a brett saison that's about a year old that currently tastes like hot sewage I could trade but I don't think anybody will appreciate it. (It should clean up the flavor in another 6-8 months, I'm not tasting it again until next summer.)
Since most of us let out sour beers roll 12+ months it's hard to set those on a deadline, especially one set a few weeks out. I'm sure there are some people out there with a more regular pipeline or more recent bottlings able to contribute.