Big fan of Chris Perkins, a very approachable and knowledgeable guy who has a firm grasp on the game and a flare for story. I think under his direction we'll see adventures and game material in general take more risks. I feel he'll have a lot of synergy with Mearls and his enthusiasm/philosophies, as well. Maybe the whole team will feed off that and be supercharged.
And to have warranted a non-RPG D&D team has to mean considerable time and effort put toward (I hope) thorough exploration of the license. Among their duties, I'm hoping they'll act as liaisons between WotC and video game publishers, animation houses, etc. I mean there is already so much going on outside of the RPG already (boardgames, comics, G9 products...).