Feelings on the current three tanks

[Reinha]

The best idea I have seen that would be painfully simple to do is make sole survivor apply either a damage vulnerability like trick attack or crit vulnerability like SCH's strategen. This would give them offensive utility but would leave their dps lower than WAR's which is apparently a must.....
This would make DRK desirable and compensate for their lack of defense. While making a niche cooldown at best into a core ability.

Sole Survivor - target takes increased damage
Dark Passenger - targets do decreased damage

Simple fixes to make both skills useful against bosses and to give DRK some utility.