Intelligence - (Capture the Flag) Capture a briefcase and bring it back to base to score
Assassin - (Werewolf) among a group of soldiers as assassins kill the assassins to win.
Fishing - use explosives to fish 5 fish better boom 20 fish bb ect.
Scavenger - team death match only when you die you do not get your ammo back. every kill gets you ammo. every kill streak without a death gets you a piece of gear for your gun or a piece of a better gun. Dying of course reset your gear making a risk reward if you want to try for an even better gun or an immediate improvement.
Mutate - (Evolved) one player is a tank and the rest of the team pick up weapons to destroy the tank player.
The point is anything would be better then Leadstrom hell i would take the last two zombie modes over this.