Another thing I just realized, the Peachette thing. People are theorizing this implies a Queen Bee-esque structure to Toads, due to Toadette's transformation into a "Proto-Peach Form" with Peach being the Matriarchal caste, which then raises questions of just what the hell Daisy, Pauline, and Rosalina are. There's still more information to get here since the game this is introduced in is planned for next year, but given that Holy Fury is probably gonna get a release date soon, this is kind of an important question.
To me, this kinda depends on the tone of the mod, which I don't think was ever clarified. Is this mod meant to be a serious interpretation of Mario lore, a la Hyrule: Total War, or is it meant to be more humourous in-line with Mario canon? If it's a serious interpretation, my personal interpretation would be if your character is a Toad/ette and owns a Kingdom or Empire title, there would be a coronation event to become the Patriarch/Matriarch, giving you a trait that gives, say, +1 Prestige, +0.5 Piety, +20 Attraction Opinion +100 Same Culture Opinion +IDK Personal Combat Skill +1 Dip. Might be a bit OP, but it's fitting lorewise and I'm sure someone better at balancing could figure it out.
If it's meant to be fully silly then... Well...
https://i.kym-cdn.com/photos/images/original/001/412/266/5d3.jpg
You can find the crown Super Crown as any character, and it gives you the Super Crown trait that gives you basically the same stats.
And if it's a serious interpretation of lore, but still allowing ourselves to be silly, here's my preferred idea: It's a serious event in Toad culture, treated with the utmost respect, but...
https://i.kym-cdn.com/photos/images/original/001/411/434/2d0.png
Toad Patriarchs become feminine to the human eye because they're not human and are inherently asexual as confirmed by Nintendo, so Toads we would consider Masculine are actually not males and they probably only have gender identities for the sake of diplomacy (Easier for foreigners), hence crowned Matriarchs are also not female if we go by a serious interpretation of the implications with the chance to let ourselves silly... This does however complicate how their marriages work... Is it possible to reprogam it so that just for the toads marriage is asexual?... I bet you weren't expecting making a total overhaul mod with Mario inspiration to be this convoluted... I believe in you all!!
Regardless of how it's interpreted, maybe Goombas, as an implied relative to toads, should also get the chance to have such a tradition.
In regards to Daisy, Rosalina, and Pauline... Well, I guess Sarasaland's natives have a similar tradition with the Super Crown coronations, or maybe if it's better to keep it as a Toad/Mushroom tradition, the Sarasalanders just have either a foreign-species queen (I don't think it's ever been implied that Daisy is Peach's cousin, but I know it's a semi-popular fanon in some parts, so her being ethnically a Toad Matriarch wouldn't raise too many eyebrows, probably) or there's just some non-canonically-mentioned Sarasalander humans. Funnily enough, I'd prefer the foreign-born ruler idea, since there's actually no reason beyond Daisy's ambiguous existence that Sarasaland has any form of human. Pauline is obviously human once you realize: Oh, Metro Kingdomers are literally just regular-ass realistic people. Rosalina, if she were a Toad Matriarch, would probably have more Toad servants, and her storybook states her as being a humanoid from earth, so she's not a Luma in a Super Crown, so logically, she must be some kind of Human like Pauline and the Mario Bros.
Sorry if I'm getting kinda annoying with these long long posts. I just wanna give my help to this mod with my self-confessed hard-on for lore stuff... I love Lore in fictional universes. Could there maybe be a Discord Server for this whole thing so us who don't wanna flood the thread with long-ass ideas posts can more efficiently be a part of the early process?