You know what would be awesome, but 343i would obviously not do it since it's been proven they're taking absolutely no feedback from the community? All three ranking systems, 1-50, experience, and credits, in Halo 4. They would work great, credits would be for purchasing things from the armory, weapon catalog, etc., and the experience and the skill-based ranking system could create the rank. It's far, far too late for them to include something like that though that would ultimately please everybody. It'll take the end of 2012 for them to notice...