I'd like a 3 part movie that starts with the Covenant returning to Earth, no not like Event Horizon... well yea I guess it would be like Event Horizon except the demons are aliens and they hide themselves real good in the Shadows. This movie would be the one where the beast is always there but not seen. The ship would be repaired and every one would be in perfect hyper sleep, including all the people who ended up corpses on Planet 4. Shit stays on the ship for most of the movie but eventually it gets onto the Earth near the end and the Covenant remains in Earth orbit.
The next movie starts on Earth with the Covenant being a near Earth satellite. The shit has hit the fan, apocalyptic war, essentially like future war from The Terminator franchise. We get to see war like androids in this one. This will be the battle movie. Mecha and Aliens everywhere. Society is still in place but the infection is spreading on outward. This movie will be set at least 3 years out. It will be made clear that although Human think they are the ultimate badass nothing they do seems to work. This will be the Colonial Marine movie. The Blond Bombshell and Daniels mark their return and Daniels is unaltered and very much human.
For the third movie... ha there is no way the first two would ever get green light; so time to quit. However it would be the Horror movie of the bunch and all of this takes place after the events of A|R on a crystal neo-Earth. One that is clean and at peace until the monster returns.