KNOWN BUGS:
if all your teammates are down it gives 20 seconds and the game ends (enemy forfeits)
my teammate is on the other team, and i am able to kill him
often changes map to unknown(cfg map) so you need to choose map again before restarting
once you go down while playing by yourself there is no way to revive
Suggestions:
mystery box may be a bit fast, try giving more time before the weapon goes away
try adding a few more options to the menu, EG. add/remove money, choose gun, godmode, UFO mode, ability to set perks, teleport, all the sort of stuff you'd find in a bo2 zombies gsc menu
hope you take some of these into consideration