What is the point of an XP cap?

Why would this ever be put in? All you would get are some specializations. Who care? Bungie was also pretty silly to do that in Halo Reach when all you get is armor.


I like Reach’s commendations though. They were so ridiculously long that they sufficed until the next game came out. In fact, I kinda hoped Halo 4’s would be even longer and even more impossible to “onyx” the commendations.