Curate, connect, and discover
Honestly, I would love to have some game that really fleshes out how much the Space Pirates scare the galaxy. The Urtraghians especially would work great in that role of trying to literally sniff you out and discover you. Honestly, more games could do with a horror game in that sort of style to flesh out their antagonist factions. Metroid kinda lacks a bit of stakes some times. There’s vague allusions to conquering the galaxy, but I think the game to do the individual consequence aspect was Metroid Prime 3. Having a game that centers around that “human” aspect of a piratical assault would do some good to establish what Samus is saving the good people of the Galaxy from.
Additionally, I think it could have some catharsis in ending the game with Samus arriving just in the nic of time and absolutely destroying the Space Pirates. It could even help to really show how much of a hero and symbol of hope the galaxy sees her as.
what would YOUR ideal METROID spinoff look like?
funny answer: a metroid-hatching tamagotchi clone, drawing from the metroid life cycle and variants to create branching evolutionary paths. raise your own metroid! feed it x parasite snacks! try not to die horribly!
real answer: I think it's unbelievable they haven't tried to make a horror game in the metroid universe. like it would be so easy to have a full game where the power suit is completely offline, or (if nintendo was really willing to experiment) having some kind of civilian protagonist separate from samus, but still placed in similar peril. I guess I'm basically just describing alien: isolation, but GOD could you imagine how good a ridley horror chase scene would be
To add a little fine detail to this, I like to think that Gandrayda’s whole shapeshifting ability needs a not insignificant amount of sourced energy. She would need to, say, tap into a ship’s power grid and siphon some energy out before transforming.
So imagine that scene aboard the Mothership where she reveals herself to Samus happening soon after a power flicker that cuts the lights out for a second, then it happens again as she leaves. Could be a really interesting tell for when she’s present, having a mini power outage.
Of course, with the PED equipped, that energy can be sourced from the Phazon growing inside of her, making her all the more deadly and capable. There’s no tell any more, no indication that she’s in your midst.
Headcanon that Gandrayda's been employed by the Federation as a spy for a long while; Specifically, to keep tabs on the Space Pirates. She was the one who reported that Mother Brain was responsible for controlling the Metroids, and with her destruction, the Metroids would turn on the Space Pirates, hence why they're used and prioritized a lot less in Prime and Echoes, and have a tendency to turn on their 'owners'.
(As for why we see Metroids feeding on Space Pirates in Zero Mission, it's because Mother Brain is a cruel entity who rules through fear and needs to feed her bioweapons; She doesn't mind disposing of lesser pawns, especially if some of them doubt her authority.)
If Metroid were to have a story adaptation... During the Zero Suit portion of the first game, Samus would find herself cornered at one point by Space Pirates; Only for one of their own to turn on them, shooting them down. Said Space Pirate reveals themselves as the spy the Galactic Federation alluded to, the one who dropped all of this key intel regarding the Space Pirates' Metroid operation.
Gandrayda isn't explicitly identified, not yet; But her wink, the way she calls Samus 'Sammy' and her leitmotif at the end; These hint to that. Plus, maybe she can take the form of an Urtraghus Space Pirate, adding to the implication and to allude to how Gandrayda debuted in Corruption and did take such an appearance there. Maybe the Space Pirates would have a more mixed army pulling from all the species we've seen, or they'd operate separately and in their own sectors, requiring Gandrayda to imitate a Zebesian idk.
The main reason why the Federation didn't notify Samus of Gandrayda is that she wasn't supposed to be on Zebes during the Zero Mission; She was stationed on the Space Pirate Mothership, which was locked in battle with Adam's fleet elsewhere (as shown in the manga). But when Ridley received news of Samus' infiltration of Zebes, he immediately flew the mothership back to that planet; Hence why in-game, he arrives about halfway through. Gandrayda stayed with the Space Pirates she'd infiltrated.
Otherwise, the Federation would've notified Samus of their spy on Zebes; Because they wouldn't want her to accidentally kill such a key asset. Plus they'd explain to Samus that the spy will introduce themselves as Gandrayda, since the Space Pirates don't know about her yet, but may suspect a spy; This is to play it safe so Samus knows she can trust whoever she comes across, because communications with the Federation are cut off on Zebes due to Mother Brain's monitoring and ability to intercept (This required Gandrayda to get off-planet to report intel).
But Gandrayda was supposed to be on the Mothership, which Adam was supposed to destroy after she fled through an escape pod, so none of these instructions were required at the time. So after saving Samus, Gandrayda leaves to maintain her cover, not bothering to elaborate on her exact identity. It's only in a future episode, somewhere between the games and before Corruption, that this Space Pirate spy is elaborated on to be a shapeshifting bounty hunter.
Gandrayda ends up playing a key role in saving the galaxy, acting as a turning point for the Federation's victory, much in the same way Samus herself did; Unlike other hunters like Rundas or Ghor (no offense), Gandrayda and Samus were both responsible for key, specific actions that nobody else could've done. And these actions shifted the tide drastically, changed the playing field definitively.
As a result, Gandrayda considers herself just as much the Hero of Zebes as Samus is to the rest of the galaxy; She can literally be the 'Hero of Zebes' herself by turning into Samus. And this helps drive her one-sided rivalry with Samus, especially since... Gandrayda can't take credit the way Samus does.
Not that Samus tries to; But in the end she's recognizable, she's a unique bounty hunter with iconic armor that anyone can see at a distance. She CAN be stealthy but she's also just as capable at blasting her way through an entire planet. Being well-known helps her career, it creates a bogeyman to terrify the Space Pirates, and a symbol of hope for the galaxy that the Federation can always remember if they're out of all other options.
Gandrayda can't be that; She's best suited as a spy, an infiltrator. Someone people don't notice, someone most of the galaxy, and even the Space Pirates, don't know about; So they can't suspect that someone they know they can trust has actually been impersonated by Gandrayda. She's meant to lurk in the shadows, she doesn't go the big and explosive, glamorous work. Her entire gimmick is being unrecognized, what is she without that?
And this feeds into this deep-down inferiority complex and resentment, including towards Samus. Not that she ever externalized it... Until Corruption, when Dark Samus took control and brought out the worst of Gandrayda through Phazon. That was when she actually revealed herself to the Space Pirates, many of whom still feared Gandrayda as secretly fooling their god into believing she was on their side; Not that they'd ever openly doubt Dark Samus' own evaluation of using Gandrayda. And it turned out they had nothing to worry about, alas... But the fear was in a way a form of recognition, validation even, for Gandrayda. She was otherwise a secret even to most of the Federation military, with only the upper echelons knowing of her.