Parry: How would you improve it?

[GranZero]

I would add parry windows based on parry skill.

Skill speed affect tick over time iirc.
Parry could do same.

Parry woudn't be reliable as a mitigation still, but parry affecting parry-strength and enabling faster window pops would be good enough to think about it.

What about decreasing detrimental effects on self? Like say poison, or other skills in PvP perhaps?

Also, in your other post you mentioned that you'd want Parry to add to the DPS a tank can do. What would prevent other classes from using those same stats to boost their DPS? (maybe their main stat, so I guess that answers that question...)

Parry = Increased critical rate upon being triggered and mitigation.

In real life, a parry in any martial arts is usually followed by a counterattack, and it's usually a critical hit because the opponent doesn't expect it. So your suggestion bears weight