User blog comment:Raylan13/Elder Scrolls Online Community Q&A/@comment-12599067-20140319142150

Exactly what will the Thieves' Guild be doing in ESO? How will pickpocketing work, and will players be able to steal things from each other? What abilities might the Thieves' Guild skill line give the player? And besides turning in stolen items for money, what profit will be gained by joining the Guild?

Concerning the Great Houses of Morrowind: Will they be joinable in ESO like they were in Morrowind? If so, which houses can be joined, and what skill lines would each House give the character?

It is known that Daedric artifacts will be collected as part of the Fighters Guild questline, but which artifacts will we be seeing and what is their purpose in-game? Can they be used in combat or will they simply collect dust in the Fighters Guild guildhalls?

How will magic play a role in ESO? Will it be learned from tomes, like in Skyrim, or from spell vendors in games like Oblivion? Will the schools of magic make an appearance and have a skill line like melee weapons do? Also, will there be spells exclusive to the Mages Guild, and if so, what are they and what do they do?