Remember the Rocket ammo on Ivory Tower? The ability to place ammo pick ups, in addition to weapon pick ups, allows for more diverse map design. I hope there is ammo pick ups in Halo 4.
To take this idea to the next level, custom games could have the option to place ammo pick ups in personal ordinance drops so you don’t have to drop your power weapon, just do some killing with your other weapon then call in an ammo drop.
What do you think?