How would you rewrite the Scarlet Lady AU - or just write a Ladybug!Chloe AU?
Those are two different questions:
Scarlet Lady comes from the premise that Chloé gets the miraculous and should not have it. If we work with that premise the key would be turning down the abject salt.
It's fine to have her be bad at it. It's even fine to have the Ladybug taken away from her eventually. I'd alter the arc in couple ways though:
1)She can't be the *only* person who is an exile, because that just makes the salt obvious. So at least one person needs to never give up on her. Power of love so strong and all.
2)Focus it on suitability. Yes definitely you can have fun with her bad traits, especially early on, but it has to *go somewhere*. So pick something she *is* good at, even if it is something she doesn't value and turn that into the eventual goal/objective miraculous wise. She will learn to accept and be rewarded for learning how to use her strengths to help instead of just trying to dominate.
3)Ultimately, as it is a magical girl show, teamwork and community are the goal. If you keep this in mind then the rest writes itself.
Now, a Ladybug!Chloé is very different. You start with the goal of keeping her as Ladybug, so you need to find her strengths. I'd go with organizational skills. She *has* obsessively studied to be more like her mother who is a successful businesswoman, no matter her personal life.
Her weakness is she confuses the visual aspects of 'bossing people around' with the practical aspects of organization, she can be infuriating and screw things up when she focuses too much on control and centering herself. Her lucky charms try to steer her towards teamwork as best they can. (Tikki is trying)
The arc is about two things. Firstly Chloé learning via Ladybug to be a *good* leader (unlike her father!) and then when she tries doing this in civilian life we have a reverse arc where the class has to learn that she can be right/effective about the things and that she might be changing.
The long term arc is about the difference between assuming authority based on intrinsic value (birth/nature) being wrong, and being awarded authority based on performance and(nurture) being better.








