The idea would only be good if it doesn't affect what you get in game. If you need to be level 40 zombies to use a wonder weapon, screw that, it would suck. If its just there purely to show skill/time spent playing, go for it. And because it would only be worth it if it just looked pretty, it probably won't get implemented, treyarch aren't going to programme something pretty pointless, even for aesthetics! it would be a waste of their time and money. Sorry, just my view, keep zombies as zombies, and not multiplayer, multiplayer on CoD i always find laggy, full of hackers, and actually really boring (CoDs been the same game in everything but appearance since 2007 when CoD4 came out, its a repeat apart from map changes and weapons dressed up to be a different weapon. This game i'm buying for campaign and ZOMBIES. if multiplayer is any good, it'll be a breakthrough for CoD for once and a big bonus, but i doubt it, sorry.