2 simple changes would fix the only 2 "real" problems they have (aside from bugs):

- Reprisal: Available only immediately following a Parry OR when Dark Arts is active. Dark Arts fades upon use. Up CD to 40s or leave it.
- Dark Dance: When in Grit, same effect. When Grit is not active, regain 200 TP, 400 with Dark Arts. It also has a good CD for this type of skill already and a proper name.

That solves the "Reprisal isn't reliable" issue, Dark Dance providing TP means it has use outside of tanking and makes both abilities useful while OT and doesn't require any major changes to the kit.

This is coming from someone who just unlocked the Job, but seems to be in line with all the posts about the issues they have.