You know all i want is,
Spartant Sangheili
Sangheili and ODST in Muitplayer.
Sangheili Armour Permations equal amount as Spartans have.
ODST Armour Permations equal amount as Spartans have.
Pelicans been useable in Forge.
Return, Hornets and Falcons Which are in Halo 4 but only appare in the background.
Shortsword, Longsword, Broadsword and just about everything else in Campain that we can interact with in Forge Mode.
Weapon Mods? Which would only be the weapons you spawn with.
Troop Carrier warthog, and varions shown from this image.
http://a1.ec-images.myspacecdn.com/images01/26/a7f1f039935aa476f0376ef17fa87fce/l.jpg
Oh, and the Hacker Class which was cut from Halo 4.