No new games, catching up with the world, and filling it with the name of SpazDragon, the dragon with a spas-12.
Who knows about the good old days, where you find the ultimate weapon of mass destruction, which was frustrating to get and seemed worth it in the end?
What if they remade an awesome canon version of the weapon to use in future games by 343i?
It would probably be weaker for balancing reasons.