Instead of 2 tanks, 2 healer and 4 dps.

Should be:

1 tank: Keeps aggro away from the party, does damage, moves the boss if needed and provides mitigation for self and party.

2 healers now changed to SUPPORTERS: provide damage buffs to party, an extra party mitigation, does damage, and 1 or 2 healing buttons for an emergency.

5 dps: do damage, some self buffs for utility.