You should pick a level where people can make custom-icons.
You know what would be hella cool? Since the custom-weapons could get out of hand (if you know what i mean), why not have the user able to choose a growing assortment of weapons as they progress in points? there can be some gallery based upon one's level, with like 1-4 new weapons for each step-up...
i know this idea may be far-fetched, but why not have abilities and stat points people can build, then have some multi-player deathmatch between GG users?