A few suggestions. I'm sure I'll think of more later on.

1. Remove shared timers on Collaborator/Accomplice.

The fact that Accomplice and Collaborator share a timer makes Accomplice a wasted ability. As a primary tank in our Abyssea group, I am constantly using Collaborator every minute that it is up as a hate tool. If one were to sit down and do the math on these two abilities, they'd notice that repeated use of Collaborator over a 5 minute period heavily outweighs the single use of Accomplice. Either remove the shared timers or reduce the cooldown time of Accomplice from 5 minutes to 3 minutes.

2. Heavy Tweaking of Steal/Despoil

As one who did not merit Aura Steal (full merits in AC/Feint), it serves me no purpose to use the Steal ability anymore, especially since AF3 has boosts to Despoil. Since NMs have nothing to take, Despoil seems like a wasted ability as well.

3. Lower the recast timer on Mug to 5 minutes and make it a damage dealing ability.

In previous games, Mug was used as a Steal ability while also combined with an Attack. With Abyssea as the predominant activity now, Mug has no use anymore.