Do you know what would be interesting subversion about Timetagger/Bunnyx:
If it turned out that Bunnyx isn't "Hero from the Future" that she claims to be, and Timetagger was sent by Future!LadyFly to stop her.
This way we could have "plot twist" of Ladybug & Chat Noir working with Akumatized Villain to stop "Rogue" Miraculous Holder
(Post that spawned this ask)
I don't think that would work because of the way Timetagger ended:
Chris: Ladybug? And Cat Noir? You're so young! Where am I?
Cat Noir: The question should be more like: when are you?
Bunnyx:(emerges from a portal) C'mon, Chris, let's go home.
Ladybug:(gasps) Chris? (Future Chris goes through the portal)
Future Ladybug:(throws back the note present Ladybug wrote) See girl? We did it. We always will.
But I do think there's a version that could work.
In the reblogs of that initial post, a couple people mentioned the idea of there being an evil Bunnyx and a good Bunnyx with the evil Bunnyx being the new main villain. My gut reaction was "it's too late for that, it would feel forced to bring it in this late in the game." I stand by that reaction, but I followed it by asking, "okay, when was the point of no return? The moment where this went from workable to off the table?" To my surprise, the answer I came up with really wasn't that far in the past.
I think the evil Bunnyx idea would have worked if it was the focus of the London special. That special was already time-travel focused, it just kept Bunnyx as a purely good character. It also once again spat in the face of the nonsense rules that canon gave us in season five:
Gabriel: There! (to Orikko) You! You can grant me any power I want! (closes the Grimoire and walks toward Orikko) You will give me the power to travel through time!
Orikko: No, you're mistaken! Time travel is Fluff's power and I can't grant the power that already belongs to another Kwami!
Gabriel: Are you trying to deceive me??
Orikko: (nods) By all means! Read the Grimoire again!
Hey, writers, if these are the rules THEN HOW DID LILA GET A TIME TRAVEL POWER?????? Do these rules not apply to the butterfly? If not then why not? At least Timetagger had the excuse of coming two seasons before they decided on this lore so it was just your standard retcon. This is all within the same season which is just sloppy. Please stop trying to explain your lore. It never makes sense.
It would make way more sense if the London special revealed that Lila was working with an evil rabbit holder - who need not be Bunnyx btw - and the special was about Ladybug and Alix fighting that evil rabbit holder who was trying to get info to Lila. It would even explain the weird phenomena we got at the end of season five. That scene where something appears behind Lila and frightens her. I don't think that ever got explained? That's on-brand for Miraculous, but is still not good writing.
If you show the audience something and then do nothing with it, you're not building tension. You're making sure that your audience will forget about it and then be confused when you bring it back. The lights behind Lila in the final should have had at least a hint at a payoff by now. They would have been a perfect thing to payoff in the London special.
If the evil rabbit got away during the special, then that would explain why Alix was stuck in the burrow while also giving her fans something to make her loss more palatable. She's not just stuck in the burrow, she's off fighting a time war! It would also take time travel off the table moving forward which would be a major blessing as this show sucks at time travel plots. They're some of the hardest plots to write!
I'd even go so far as to say that the London special should have been all about Alix without involving Ladybug in the time war. That would let Alix learn things while Ladybug stayed in the dark. As is, it's a little weird that Alix didn't learn the new butterfly's identity when she knows everything else. Plus, if you're going to write Alix out of the show, then at least give her a proper sendoff!