Removed Halo Features That Never Came Back From Every Halo Game

Halo 2 had the Spectre, Halo 3 had the Mauler, Halo Reach had playable Elites and Invasion. At some point all of these features were removed and never came back. What things were removed from Halo and have yet to make a return? Patreon:   / rocketsloth   Livestreams:   / rocketsloth   Join our Discord:   / discord   Become a Member and join our Channel! https://goo.gl/Dpahpo