Alright. Well, I wound up remaking all the 'Guca in the custom editor. As it stands they don't really play nice with each other due to how the game prefers a team to be built, but it's easy enough to unhook them from that if you don't care about the relationship building these days.
This first draft has the full Mitakihara Quintet, with AI generated images for both civilian and Chosen forms, and the custom roster and appearances. If I've done it right you should be able to just download the zip, unzip it, drop the portraits in the portrait folder and the roster wherever you keep your own rosters, and import all five to the game. There's no sixth 'guca, though, so your second pass through is going to be with some random anyway.
For version 2 of this mod, done whenever I feel like it, I'll add Yuma and Nagisa to the roster (and maybe Kazumi? Maybe even Oriko and Kirika... Well, some of them, at least), tune the personalities a little better, and maybe figure out that custom write-in feature nobody uses and see if I can't get some custom scenes plugged into the game.
I'm also considering a full re-do of the canon portraits, replacing them with not-magical-girls-at-all IPs that are popular, like Asuka taking over for Fury or Komi as Whisper. If I do they'll be a similar style to the Meguca, with struggle being blowjobs and swoon having visible cum on their face.
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It goes without saying that this mod does contain what some would call loli
While no explicit mentions of them being under 18 are included - obviously - Madoka and Homura are flat as boards so... Your discretion is your own.