It would be nice to see somme zombie dogs and some perks on the weapons or maybe even use your own weapin classes also the chance to earn Xp for lvls would make this mode would be more fun......have open maps where after 50 kills can call in artillery and also buy certain barricades where the more it cost the more it would hold of the hordes of zombies and get to use like satchel and bouncing betties where you can watch you own back