We are thinking of using a 2nd tank on Soa HM to have him break lighting balls.
There is zero reason to do so, the DPS loss isn't worth it at all.
In P3 avoid the balls while the boss is damageable, after hes immune, break the lightning balls with the people targeted, then get back on the mind traps.
~10k damage to each person is easily healable
1. Turret Breaks on EV
2. Puzzle EV
3. 2 Bounty Hunters Palace
4. Droid with Fire Palace
1. not needed
2. not needed just kite them
3. only on nightmare (maybe)
4. not needed easily healable the boss doesn't do enough damage to the tank to warrant it.