They should make more Halo: Reach sets (i.e. Falcons, Reach - era Warthogs and Elites, Skirmishers, etc.) There should also be less of a focus on Spartans, Elites, Brutes and NMPD, and more on Marines, Grunts, Jackals and Drones. I would also like to see more structures, battlescapes, etc., as well ...