New game modes?

If you could add a new game mode to halo 4 what would it be?

Nothing but unlimited grenades.

What about a map where every1 get an AR and is on a long beam, where you cant walk around, you have to jump over people and land of the rail… rofl

A class-based game type like Team Fortress 2 but using the Halo weapon sandbox and the Halo Universe species as playable characters.

For example you could be a Jackal with a Needle Rifle or a Grunt with a Fuel Rod Cannon.

Movement speeds, jump heights, damage resistances, abilities, and weapons would be different for each class.

No weapon pick up.