I would expand and bring back more casual development for Kinect. I would have a couple of new games like Kinect Sports, Wii Sport's Resort, Wii Fit Plus type, Kinectimals crowd. I would make more fun party/games. And make several versions of Kinect TV party (even a funny adult one.)
I would have some more Occulus Riff to play at E3 2016. I would have a few Xbox One games that are playable on the Riff.
I would continue advancements of DirectX 12 - for cross platforms and PC/Xbox One.
I would consider buying Sega or Nintendo.