Before I get started, please cast aside for the moment any major opinions about the Prometheans you might have. Yes, I’m perfectly aware they may not be the most popular faction. Yes, I am aware of the gameplay issues they have had. I simply ask that you put those aside for now and hopefully see that, while some may celebrate their lack of inclusion in Infinite, it represents a serious potential problem for Halo’s storytelling moving forward.
The Prometheans came onto the Halo scene with Halo 4. They were mechanical constructs used by the Forerunner commander known as the Didact. The Knight units were created by the Didact after forcibly digitizing human beings as revenge for the human-Forerunner war and, when he awoke in the time of the Chief, did the same to the residents of New Pheonix. I know, a really abridged recap, but I’ve only got so much time. Most Halo fans are aware of the Didact, the Prometheans, and all that transpired in Halo 4.
This was just to remind you what the Knights at the very least were. They were a mirror to the Master Chief. Innocent people turned into war machines to serve at the behest of authorities trying to impose their rule over the galaxy at large (well, maybe not the entire galaxy as far as the UNSC was concerned, but you get the idea). Not only that, but the 5 million people converted into Knights would represent the largest loss of human life since the end of the Human-Covenant War. Each time you killed a Knight, you killed another human being who would have been completely unable to resist what they were doing. In that way, they were also analogous to the Flood. Not surprising since the Didact’s mind was twisted by the Gravemind prior to his creation of the Promethean Knights.
My point is, the Prometheans were a major contribution to the Halo story. There was a lot of potential. Even Cortana at the end of Halo 5 alludes to using the Composer (or something similar) to turn those against her into the image of her Created just like the Didact did to humanity.
And yet they will have no presence in Infinite. That doesn’t mean they can’t appear in a future campaign expansion, but their absence is odd. It’s especially odd when we know a crashed Guardian is on the ring. It’s odd when we know Cortana was present and it’s unlikely she’d arrive without any forces of her own. Still, maybe you are happy they aren’t in at all, so what’s the problem?
Getting rid of the Prometheans in this way is a continuation of a problem 343 has displayed over these last 9 years with narratives. When something isn’t instantly popular, they’ll do what they can to shift gears and just toss the idea aside if it’s a story or kill off something if it’s a character.
Examples
Remember the aforementioned Didact? After Halo 4, he appeared in the comic Halo: Escalation and was “contained” by the Chief. He’s been alluded to still being alive based on a Forge doll description, a coloring book, and the Spartan Field Manual. Yet that’s all he’s had for the last 8 years or so.
Remember the Janus Key? This was a Forerunner device that was revealed in Spartan Ops and could reveal the location of all Forerunner tech in the galaxy. It, along with the Absolute Record, was literally poofed out of the story at the end of Halo: Escalation. They’ve teased it may be accessible in other areas, but that’s amounted to nothing in the last 5-6 years since Escalation ended.
Remember characters like Jul 'Mdama and Spartan Team Black? Apparently, 343 didn’t know what to do with a Sangheili who knew of ONI’s plot to disrupt Sangheili society and had been personally kidnapped and abused by ONI, so they killed him off. Team Black got killed off because 343 apparently has an “OK to Kill” list.
These are just examples of things 343 has started and then just gave up on that, in my opinion, have weakened the narrative over the years. The Didact hurts especially since he was a major force in the expanded universe, billed as Chief’s first real nemesis, was said to be essential to post-Halo 4 fiction, yet somehow became “extraneous” to the story Halo 5 was trying to tell despite initial plans for him to be in it. And they’ve never explained how or why he became extraneous. Now it seems like the Prometheans are joining him.
Again, say what you will about the Prometheans, but I think we can agree not offering stories closure is a bad precedent. It also makes getting invested in characters and stories tough if you fear at any moment 343 will just shelve them for the next decade and HOPE they may come back to them later. I know they say Infinite is a 10-year game and that leaves room to tackle stories that have been set aside, but I ask what incentive do they have to return?
I only hope that new characters like Escharum, assuming Chief doesn’t kill him in the end, and the Harbinger appeal to fans. Otherwise, like they have for the last few years, 343 will just give up on them and throw them in the trash without so much as a second thought. Today it’s the much-hated Prometheans and folks are happy. Just pray 343 doesn’t grow cold to something you enjoy from here on out.