my friends and i usually played 2 aoe teams and 1 support team that provide utility to other teams.
we go by the kage's barrier and universal buffs.

or depends what team we wanted to do.

We usually try out in Group Instance first to see if our strategy works properly.

I usually played support team, where I provide cc's, debuffs and survival-ability to my friends' teams.

I love Kurenai atm. Her heal and shield is greatly underestimated.