So, ignoring all of the awful exposition for a minute and looking at the plot just as it is, I really think 343 has killed Halo, probably permanently. Why? Well, they’ve made the criminal error of digging themselves an epic sized drama hole that will take some incredible manufactured bull to set straight. Unless they’re going for a Game of Thrones kill everyone and go out with a bang style plot (which is what many see happening with the show, but that’s another discussion), Halo is gonna be awful. Why?
Well, Cortana now has control over these massive forerunner enforcer things and is already setting her galactic dictatorship up, forcing the UNSC to “flee until they know how to fight” or whatever. All AIs are loyal to her and it appears as though the UNSC is left broken like the Jedi after movie 3. To get rid of Cortana, we’re going to need some ridiculous levels of BS considering she has a Halo ring, like 5 Guardians or whatever, all the AIs except one, and a vice grip on the galaxy. Seems pretty impossible, right?
I feel as though there is one path out, maybe, that doesn’t lead to BSing away the Halo franchise. Draw on Halo 2’s excellent plot: the cure for rampancy can be like the great journey. Have Cortana’s rampancy continue, figure out that it’s a lie, and have some sort of civil war with AIs/Humans. Pit Chief, who could side with Cortana if she softens her stance a bit, against Lock like we all wanted to see.
Otherwise, 343 has set up an invincible enemy that can’t really be defeated at this point. Plot wise, I don’t see a way out.
And before you say that Halo 2 had impossible cliffhangers, it didn’t. Elites were going to help the UNSC finish the fight; now, with the Covenant civil war, there was a chance for humanity. Chief could (and did) bust through High Charity to get Cortana back. All the loose ends got tied up in a compelling and convincing if not believable way; this is part of why Halo 3 is the GOAT Halo.
Just my thoughts. I walked away from Halo 5 the same way I walked away from the 8th Star Wars; convinced I had just seen the worst installment (okay third worst for Star Wars the first two are hard to top)