1 Allied fractions of both the Covenant and Promethean (we had the elites in the second half of Halo 2 and all of 3)
2 Promethean Vehicals
3 The return of the hornet ad falcon (and forgable Pelican)
4 MORE GUNS
5 A mech suit like the preliminary design of the mantis, just a little suit that builds up around the spartan/character (like the Promethean guns)
6 Firefight with an end objective, a number of waves with boss fights on a set wave bases leading to an extraction
7 A space battle, ANYWHERE, i mean RvB did it why cant we do it in a mission
8 More Pro weapons, a sword, lasers all sorts of things