Have you seen Dream:Askew? It's Mcdaldno's "queer apocalypse" game based on the *World system, in which PCs have Principles just like the MC does. Ignoring the apocalypse I suspect, you could easily take MH splatsplaybooks and give each one a set of Principles from D:A splats. Or have the players choose a set for themselves.
Some example principlesPrinciples:
The Arrival:
- Look for opportunities to both fit in and stand out.
- Learn about the queer enclave's social rules through trial and error.
- Look for opportunities to hint at your troubled past.
- Explore themes of resentment and acceptance.
The Tiger:
- Reveal the ways in which you aren't in control.
- Think about what separates you from other sources of power and authority.
- Demonstrate both your kindness and your cruelness.
- Explore themes of dominance and resistance.
There are six different sets of principles, each relating to a character type in or around the Queer Enclave. These Principles are not specifically sexual, most of them are psycho-social, but they can manifest in both sexual and non-sexual ways. Check it out.