It occurred to me that amongst all the other bits of information about ESO floating around, I never saw or heard anything about the skill trainer NPCs that are a common feature of the single-player Elder Scrolls series. I doubt they'll be in the game, but what I wonder is should they be there? If a character has the gold, should they be able to train skills at an NPC? Why or why not?

They were fine in the other TES games, where it's only you. But in an MMO you should have to learn things yourself, not chalking up some gold for a couple of levels.