IT was only a matter of time until someone came up w/ this thought. Though, they mention FPS's.
Strategy games (think of say Sup Com games) and some RPG's (such as Dragon Age: Origins), and other games really could benefit from KB/mouse support on a console. We might see more of THESE types of games on the console more often too, if they did actually utilize this control method. Plus, might save some dev's some damn development time on deciding to come up w/ a different UI for a different control method.