Hm... fan fics where a character has to impersonate/pretend to be another might be interesting if the MC is genderbent (and possibly the character they are supposed to be impersonating). For example, The Horse and His Boy when Shasta swaps places with prince Corin, Utawarerumono when Haku has to pretend to be the great war hero Oshtor, Gundam SEED Destiny when you have Meer pretending to be the opera singer Lacus, etc. You have the same setup as in the source material, but very different societal roles that the MC is trying to learn on the fly how to adhere to with the challenge of trying not to tip off too many people in the process.
The Sietch
Val the Moofia Boss