Dark Knight : Just another mitigation tank

[Omskahn]

You can make combat on different classes feel differently whilet giving them all functinally identical abilities.

All tanks take the exact same cross class as it is.

All tanks do not take the same cross classes. Simply cuz they can't. WAR and PLD are arguably completely interchangeable in most situations of this game with enough skill and effort, yet they do not have abilities that are functionally identical.

Unless you mean identical in the sense that they both have skills that keep them alive, then yea, pretty similar.

I fail to understand why you think that minor distinctions between classes, just enough as to give them their own unique feel, MUST result in imbalance. Especially considering that every other class is more less already so excluding DRK and maybe AST