A little more on Halo Wars: You don't seem to understand what "IP" actually is. It isn't a "game type." Halo, its logo, its characters, its design, and its universe are all the "intellectual property." If they became "new IP" when used in new contexts, any company that wanted to could make a Halo game, as long as it wasn't an FPS (or now, an RTS), without paying MS a dime. But of course, they can't. Halo is established intellectual property. It doesn't matter if it's an FPS, an RTS, an RPG, or a freaking cooking simulator, the Halo IP doesn't become new. It doesn't even have to be a game. The Halo IP does not become new if they make a movie out of it or make action figures out of it, either (Todd McFarlane has to pay royalties on all his figurines). That's why, for example, I left EA Grand Slam Tennis out of the list. The IP the game is based on (the US Open, French Open, Australia Open, etc) is old--decades old, in most cases. It doesn't matter that it's the first video game on the Wii by EA using this IP. The basic IP itself is old, which is why EA used it in the first place. Using established IPs to help sell new products is a very, very old practice, whether it's athlete's face or a familiar fictional universe. So before you go there, no, no one uses "new IP" to refer to an established IP used to hawk a different product.
