doctorbadwolf
Heretic of The Seventh Circle
I don’t think I’d want to play Girl By Moonlight straight, I’d want soemthing less allegorical and I would want soemthing with more player driven narrative control than “play to find out” really involves IME especially for telling magical girl stories, but a lot of that looks extremely cool.For more defined powers and roles, particularly in a (grim and gritty) fantasy setting, I believe Band of Blades (https://evilhat.com/product/band-of-blades/) is quite a good shout. I will admit I browsed the rules and decided not to bother because it's a bit more defined than I like for this system. There's a free supplement, Blades of the Jhereg, which is available on the main website (https://bladesinthedark.com/), and a D&D style hack called Blades Against Darkness as well.
The magical girl hack is called Girl by Moonlight and was crowdfunded last year (https://evilhat.com/project_status/girl-by-moonlight/). Not my thing, but more power to you if it's yours.
I bet if I had players that dont intentionally make bad decisions because it’s faithful to the character and narrative, I’d feel differently, tho.
I wonder how much work it would take to do a Kids on Brooms style tailor made hack. Like, figure out what themes and aesthetics the players want, and build the playbooks and playsets to suite that. So like if they want lunar themes for the whole group, you’d have types of moons as playbooks that also fit certain archetypes, like the Harvest Moon is the deadly lancer with red themes and can evolve to The Blood Moon where you personify wrath and violence (with a risk of this breaking very bad if you aren’t careful)