It wouldn't surprise any of us if 343i continue to make money off Bungie's work and make another anniversary game. I really wish they wouldn't, I really wish 343i would just focus on Halo 5 and what went wrong with halo 4. If it were to happen we'd want the H2 multiplayer back right? It seems unlikely that they'd do that as it would detract from the Halo 4 multiplayer base and they didn't do it with CEA. I imagine they'll just re-release old H2 maps into the H4 sandbox. As for the game itself...... I imagine they'd swap all the old elements for the new elements. So new Chief armor, new ugly Pelicans, new ugly Covenant, new ugly Warthog..... but at least we'd get Plasma Rifles back.