Reverse Mountainous
5 Beautifully tragic near-extinction Human townies (immediately die of despair realizing they the only human left alive)
2 Bulletproof Lover Jester-Mafia Changelings
Jester-Mafia compulsively shoots a target that's not bulletproof.
Town wins when only changelings are alive or nothing can prevent the same.
Mafia wins when only humans are alive or nothing can prevent the same.
Town chance of winning with random lynches is 3/7.
It's still an informed minority against an informed majority.
The core problem of jesters is you punish town for doing what they're supposed to be doing, but that's not really the case here.
The good thing about this concept is maybe rewarding the concept of townslipping and towntells, which at various times is argued by some of the playerbase to be easier to use and a more enjoyable art than direct scumhunting.
The bad thing about this concept is that after each lynch, the player leaving the game is likely one that was helpful and well regarded, so the difficult business of dayplay is even more difficult.
(Third, minor bad thing - that the setup is small yet doesn't carry dayplay through a 3 person LyLo)
I think the bad thing outweighs the good thing so therefore this is worse than frontwards mafia. But I'm not inning into a queue to run this, I'm theorycrafting.