Here are the changes I would like:
*.) Despawn timers. A definite must.
*.) Able to put in any timer we want. We’re limited to “Spawn in 3 minutes” maximum. Why not let us access a number pad to input any number we want?
*.) Doors. I know exactly how this could be implemented. Give doors and certain objects a channel, like teleporters. Then make a switch object that has a channel. Activating the switch triggers the special action on all objects on the same channel
2.) Custom Games
*.) Fix the bugs Halo Reach had, these are numerous.
*.) Bring back Shield Vampirism that Halo 3 had
*.) Bring back VIP
Make your own suggestions!