He's got some of the usual suspects in there, including the long awaited hero classes. But his biggest suggestion is probably that the expansion focuses on adding oomph (technical term) to the midlevels of the game. In his imagination, there is no new level cap, but rather a complete reworking of everything between 1 and 70, including an all new neutral faction with four new races, and a new continent of quests for players from beginning to end. I doubt we'll get anything near that comprehensive, but it's true that players want more midlevel content. While this is probably beyond their wildest dreams, hopefully Blizzard will at least hear their pleas.
In other places, Tobold is just plain wrong-- we're going to see guild housing before we ever see player housing, and Blizzard has consistently said they want their armor to look like what they say, not what players say. But he's dead right on the new professions-- woodworking and the ability of players to make arrows and bows would both fit perfectly with the lore, and fill a nice hole in crafting that's been there for a long time.