You're either misreading me or you like it because it helps you to have a town player lynched. Not sure which. But here is an idea. I have apples for trade that soft confirm me as town, because they specifically help against mafia. I can trade you one of those. If you still vote me afterwards and I'm lynched, everyone will see it and know you're mafia.
If you're town though, an apple will help you. Win win for me. Deal?
This makes me uneasy, simply as straight out claim.
We pick our spheres before we get alignments, and for all I know we get our powers before we get alignments too. To my read, you're making the claim that nqt would absolutely never create a mafia role that gave other players 'protection against the mafia'.
Heck, webadict's supernatural N1 had mafia killing mafia, with a disrupted action that should have ensured the kill was redirected, but didn't. Mafia protected from mafia could be incredibly useful in a game like this too, we already have a claim of an item that can change hands even if you don't want it, that can draw 'first' kill or night kill to the person with the item.
So to my thinking, a mafia member that can give protection from mafia is incredibly useful for mafia. They know who has the protection, they don't go kill that person just yet, and maybe try to lynch instead. They can protect their own, even from being given that dangerous page of attracting the first kill at night.
Is there something more you can explain why we should just say 'ooh, Qua is town, yay! I eat an apple and get protection from mafia, and this is town for sure sure sure!'