Absolutely, Steal and Treasure Hunt for improved farming, perfectly balanced because it is tied to the Companion system rather than a Job we can take into instances. I'll be honest, that's 99% of my motivation for this suggestion, I want a Thief Companion to speed up farming crap like Dragon Skins...
Rogue has Thief-like skills, including Mug, a passive to move speed, and Sneak Attack/Trick Attack to go with that hiding skill. Just need the Treasure Hunter trait.