How about Riposte?

[Nadirah]

I'll say it before 100 dark knights enter the thread to say it : Riposte is already in the game.

It's a Dark Knight ability. It triggers off Parry. When they parry, it activates the ability to use an Off-GCD attack (and in the case of FFXIV's riposte, it both does damage and applies a damage down debuff).

Sadly it has a 30 second cooldown, and even with it existing Dark Knights still dont benefit enough from Parry per point to make parry stacking worth it.

That said, the idea is sound. Some kind of mechanic across all tanks that noticeably increases their DPS when they parry/block would go -some- way to fixing the terrible parry stat, but even then the returns you get from 1 point of parry is terrible.

The ability we're referring to is automatic. Always.

You attack me, I block/parry/dodge I automatically hit you back for a percentage of weapon damage.