I don't really think you should be posting an entire campaign here my friend, I thought this was an ideas discussion, not a place for your thought out campaign should be. As for halo 5 ideas, I think we should just let 343 do what they want for campaign since they have already thought out the trilogy ever since splitting from bungie to work on halo 4
Dude I'm also pretty sure they already killed the grave mind and the flood like five times already. The reclaimer trilogy should be about how masterchief as reclaimer, what he really is and his relationship to the forerunners. For halo 5 multiplayer, I would be glad if they brought back firefight with ODSTs back, for the more human approach without armor abilities and shields.