guys. best strategy I remember when I had to do this was to always use kanan to try add offense down to the single targets.
when ever you have the chance to call an assist, it should be to get kanan to land offnse dwn on a main "boss". once this is acheived, zeb should be called to daze a target (if target is able to be dazed), otherwise call hera to land expose on tanks/high health targets. if these are already met, then I would call ezra for pure damage.
when hera is calling the assis, it can be to ezra if offense down/daze etc is already applied