One issue I've had with the mcc before that I'm still seeing now (or I guess it's less of an issue and more of an inconvenience) is that when you get new unlocks for customizations, that the game makes it easier to find in the menu by actually telling us which game said unlocks were for. This wasn't as bad in earlier seasons when it was just the one game at a time for seasons 1 and 2, but when you're dumping several season points into these recent seasons and you can forget which games they were for and have to go game by game to find it. I can only imagine what next season will look like. Like all I'm asking for is that "new" icon to show by the games which you have new customizations for in the menu.
While we're at it, why is the weapon skins for halo 4 such a pain to get to. For one, like mentioned before, but to a higher degree here, there is no new icon showing even where the unlocked skins are in the halo 4 menu. At the very least, it would have made to obvious that the skins are under "loadouts". Speaking of which, why are the weapon skins under loadouts? Why not list them under "colors" or even under their own dedicated "choose skin" section like 1 and 3? Is it because they're exclusive to the loadout enabled game types and not the multiplayer as a whole, and why?
One more thing I want to bring up is tangential to that last little bit about the skin sections in the customization menu. Why is it that the weapon and vehicle skins are in separate sections in the menu for Halo 1 when halo 3 has them as sub sections under "choose skin"? Maybe it's just to have it take up less space in the menu, but it's a little annoying that there isn't any consistency with that.
Lastly, when would we be looking at new skins in general? Vehicle skins for 4? What about halo 2, or even reach? There's going to reach customizations coming soon, you still owe us the GRD and more robotic arms anyway.