I should be free for testing so long as I'm told when to do it and it doesn't coincide with PAX(if the test is at the end of the month). I'd be up for testing maps, but I'd recommend doing a few things since balance testing is a bit different from bug testing.
1) We should be allowed to have a voice communication server, either set up by you or a community member. The single fastest way to test things is by allowing people to chat with their voices.
2) We should have some set up optimal time frames given to us via email. People are a LOT more likely to congregate if you tell them when to group up, and you have more authority than a community member would.
3) PLEASE enable full map visibility. Seriously, that would help tremendously. Even just setting the fog of war to be fog and not pitch blackness would help a buttload with map testing.