Idk, I seem to have no issue keeping up DD wise with most of the "Heavy Hitters". Granted, as I said earlier my Dnc seems to do even better. Personally I'd put thief in that "Top Tier" slot, but I have seen way too many pink thieves that I cannot. One apple spoiling the bunch is one thing, but jeez... There's a lot of rotten pink apples...

That being said... A "Dagger Mastery" of some sort would obviously be a nice addition. If anything just because we have NO alternative weapon. Most jobs have at least one other weapon only one tier down, but all of thief's are two tiers lower.

But what would it add? Accuracy? I don't have accuracy problems. Haste/Reduced delay like Martial arts? Maybe, but that's kinda the void Dual Wield fills (And if you ask me, any "One-Handed" weapon user should have this natively anyways)... Attack bonus? Possibly, I'd go so far to suggest a level of "Ignore Defense". Then there's things like Crit Attack Bonus, or Crit rate that could be added, etc.

What are thief's actual deficiencies though? What coudl the trait correct WITHOUT putting it so far ahead that balance would be upset. Especially when it comes to soloing.