I'm taking applications for a crew.

Naw, new to the site and want to hear from some of the top crews on what you look for in your members. Win to loss ratio? Consistency? Passion? Availability? Or is the goal to have the most members? Testing the site out today and ready to get in where I fit in but have a few questions:
Can you opt out if the crew is not to your liking?
If you can leave a crew, does the crew lose those points?
What are the benefits of joining?