I think they should release a standalone Halo multiplayer game for next gen, and have the Campaign games as downloadable packs, and all a reduced price. They should give players the tools to craft their own experience. Release around ten fan-favourite maps at launch, and let players create their own maps and gametypes with a full-fledged map/weapon/vehicle/AA/Equipment editor along with some sort of Megalo editor. They could get some competitive players and Forgers to come in and help them create the ultimate competitive experience, and add in features that would greatly benefit e-sports (streaming, spectator mode, etc). Giving players the tools to create custom Campaign, Spartan Ops and Firefight experiences would also lead to amazing creations by the community. They could make money by having microtransactions, like armour packs, achievements packs, etc, and also by selling downloadable Campaign missions set in a variety of settings and featuring stories from across the Halo universe. Also, map creators can also be given the ability to monetize their creations, while 343 takes a small percentage. A global armour system would be necessary if they were to sell armour, though, but if they also have different species that are playable (perhaps have limited customisation for all of them except Spartans and maybe Elites?). All this, IMO, would make an amazing Halo game. What makes PC games great is modding, and if Halo can implement that, I'm sure tons of PC gamers would buy the Nextbox and Halo. I know a lot of my friends would.
