This is hardly a suggestion, more like something that I would just like peoples thoughts on.
The Game Changer is an in game feature, when activated by walking in to them as if they were a pick up they effect everyone in the game the same way. This feature would simulate the effects of the crystal found on Reach. After the crystal was destroyed there was still dust remaining, so the game changers would be based off the research of the dust. They could be called Game Changer Crystals. They would serve no canonical purpose but might be cool and freshen things up once in a while, add some variety. They literally change the gameplay somewhat drastically. I could only think of a few different Game Changer Crystals. One when activated causes all AA’s to convert to Equipment and all gameplay elements to convert to exactly how it was in Halo 3, if it wasn’t in Halo 3 then it is taken out of the game until the Game Changer Crystal wears out(unless its weapons or vehicles), this rule applies for all Game Changers. The next one converts the game to HaloCE. The next one converts the game to Halo 3 ODST. If there is one more it could change everything to something that we haven’t seen before.
This isn’t a damn thing like what the crystal does in the book, but again, this isn’t canonical at all.
Thoughts??