As someone who's had to recruit crew in the past, I think the problem you're encountering is that we're not strong on centralized, non-show-specific communications -- so if you're not volunteering to someone in charge of crew for a specific show, the information that you exist may not end up getting propagated to the person who will be recruiting two months from now. My impression is that auditioners are a source, but not the main one, of crew. But producers/directors end up networking for crew, which means they often end up recruiting people known to them or someone close to them--not because we wouldn't love new recruits, but because we haven't asked the right person to lead us to the new people. The group is still working on between-shows infrastructure, in general; part if still being a relatively young, volunteer-run group.