First of all , what enemies are you fighting? I think The Flood , because Bungie said that there are more Flood in other Halo rings. Also i would like to have more weapons in Halo 4. I would also like to have the Forerunner energy sword in Halo 4 (seen in Halo : legends) , that was the first think me and my friend though from Halo 4. i would like to see more armors also in Halo 4 
Don’t dissapoint us 343I , good luck.