bo_bannan
Rings for Crew
These are the best rings for fight the hive in a crew basically the strategy is use rock armor on your partners at full rage for tank the incoming damage but two persons of the crew have to bring Divinity instead of Rock armor cause you will need to recover stamina faster in higher waves so five persons of the crew have to bring these rings three persons with rock armor and two with divinity.
Rings for buffer
In the crew there have to be one buffer person in order to buff parterns and help to reach higher waves the strategy is buff your partners and heal them while they fight all they can cause as you can see the buffer probably can't handle a battle against more than one enemy so the buffer have to stay aways from battle and heal/buff your partners. You should mention My Density somewhere in here. One person can bring it instead of rock, or the buffer can bring it. In my opinion, it's essential.
I'll try to think of some more stuff, but so far it's a great guide!