A few quick suggestions about Tankers:
1- Tankers should do knockback when they defeat an opponent. Just for the effect, it looks cool, and is very comic bookish.
2- Tankers should swing very slowly and not accurately, but they hit hard. I mean HARD! Again, very comic bookish.
3- The Tanker Taunt power should be a direct challenge to one opponent to come fight him in melee. It needs accuracy to hit, but when it does the target comes running fists blazing.
-Badlok