AU time, with a little bit of theory mixed in. Feel free to use if you want, but I will be making a fanfiction with this.
What if (just stay with me here) Ladybug and Chat weren't trying to unmask Hawkmoth? And what if he wasn't trying to unmask them?
Because, as far as we've seen, he only wants the Miraculous to bring his wife back from her magical coma/death/whatever it is, and what if Ladybug has figured out that the goal of him taking the Miraculous isn't to rule the world or anything.
And, honestly, she already figured out Hawkmoth's identity when she met him the first time.
(which was over video call at the hat contest, remember)
And instead of turning him in to the police, she goes to Chat.
Because at this time, she didn't know about Master Fu.
He is VERY against it at first, but slowly warms up to the idea with more evidence.
(i.e Gabriel not leaving since Emilie's "disappearance" and randomly disappearing only to return after an Akuma has been defeated.)
So, they come up with a plan.
BUT, I'm getting off topic.
You want to know who IS trying to unmask ALL of the Miraculous Holders?
And, eventually, her attempts get so annoying to all of them that they band together to get her to stop.
They decide that when asking her doesn't stop her, they need to bring in someone else.
Someone that can get rid of the Ladyblog without anyone tracing who did it.
Hawkmoth brings in Nathalie.
They fumble for a few minutes, trying to explain how they know each other without giving away Hawkmoth's identity, but Ladybug and Chat tell them they already know.
When asked why they didn't go to the police immediately, Ladybug presents her logic.
Anyway, Nathalie does her thing (and is surprisingly good at it, too) and the next day, Alya is Akumatized over it.
(They can't just disappear together like they were thinking of doing. It would be suspicious.)
Except instead of Ladybug showing up to fight the Akuma, it's this older man fighting alongside Chat Noir.
Papillon Bleu has taken Hawkmoth's place, because Ladybug and Hawkmoth switched Miraculous the night before, this revealing her identity to him.
He's surprised, but can see why The Guardian would choose her.
You'd be hard pressed to find someone better.
He tells her as such, and is surprised when she splutters that she's really not that good and it's really just luck.
Marinette admits she has no idea what she's doing, so Gabriel let's Adrien bring her over after school a lot so Nathalie can teach her how to fight.
He ends up seeing her designs when she falls asleep on one of his couches after training, and offers her an internship.
She accepts, of course, but doesn't tell anyone else, because by now, Lila has shown up and is driving everyone away from her with her lies.
She "casually mentions" this a few days later, and the next thing the class knew, Jagged Stone, Clara Nightingale, and all the other celebrities that Lila lied about knowing are on interviews with Nadja all throughout that day.
They try to get Marinette's friendship back, but she stopped showing up on Monday, and a simple Google reveals a different interview that went up less than 24 hours before this all started.
It was Marinette, Adrien, Gabriel, and Nadja.
She was going to a school for the arts now, and had a strong job firmly in Gabriel, the brand.
All in all, it's just a bunch of fluff and crack with a slight sprinkling of angst because Lila.
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