"Modernization"? If we're talking proper modernization of the competitive FPS genre, we aren't talking about perk systems or other fads. We're talking about theater mode, file sharing, gametype and map customization, online stat tracking and the like. Halo 4 is actually a regression, considering how Reach did everything better.

Also, all of the new CoD-like elements in Halo 4 suck ass.