Mage Ragepunk
For crews, you kinda do have to be a bit of a Generalist. I.E. Buff your crewmates, heal them, and attack efficiently.
I can't think of anything specific other than that, other than having said buffs, or some understanding of the instance you'll be heading into.
Good luck.
Hmm, yeah see...that poses a problem due to the refreshing challenge of keeping your Stamina up. Now, don't get me wrong: I have an almost mid-level Divinity Ring and my Fitness Ring keeps me going (to some degree) so I'm relatively comfortable in my recharging but when joining a crew...that could pose a problem.
Interesting response to this thread but I'll look at it as a -1 for joining or making a crew.
Maybe it'll be easier to do something like this with real life friends that you happen to persuade them to join this game. Less pressure, I assume.