My idea is for them to combine steal, aura steal, and despoil into one. Do away with the worthless aurasteal merit and give something else worthwhile. Do away with the despoil JA to clear up another JA on THF so it can have yet another useful JA in the future because I think the jobs have like a 15 JA limit? Or something along those lines. Then, that just leaves steal. A steal that will steal items, debuff the monster, AND steal it's buffs. Since our shit is all shared timers anyway you might as well do this so as to free up JA slots because we can't do but one of them anyway every 5 fricking minutes. We don't care about the choice because it's not much of a choice to begin with.
And if you think the ability to probably not steal an item, debuff a mob with MAB down, and stealing it's protect is somehow unbalanced and will heavily tip the battle in the THFs favor, well, I know when someone is blowing smoke up my ass to get out of some work to fix a job.
As far as I really care, I want to see mug and steal both timed to 1-2 minutes rather than 5/15. That's all I really want. I couldn't care less about your despoil or aura steal. Steal success is so low that I'll still probably not use steal but once every 10 minutes anyway when I remember the damn thing exists. I would like to use mug like once per monster, assuming it dropped gil, to get my shotty extra 1-35 gil per fight. Heaven forbid we can mug a HNM every minute. We're gonna have THFs coming out of HNM battles with diamond gold rings earrings and gold necklaces with giant pendants that reads THUGS 4 LIFE on their fingers ears and necks because they just got sooooo rich mugging gil. That's how silly a 15 min mug is. Maybe it used to be super duper in the beginning but 10 years later it's a waste of game space.