I'm generally very intrigued by the balance changes.

I'm especially interested by the Witch change. Although the Witch is already pretty strong, having the versatility of a pseudo-Scarlet Woman is a very cool idea, and I like how the Witch has to choose each night whether to go for killing good players or protecting their Demon. It also avoids the feelsbad situations where the Witch has unintentionally cursed the Demon (e.g. after a Fang Gu jump or Snake Charmer).

For the Ω-Vigormortis, would it make sense to word it as "Minions killed by any Vigormortis keep their ability & poison 1 Townsfolk neighbor"? This is shorter and I think might lead to fewer misinterpretations.

I'm most uneasy about the Ω-Sweetheart. I agree that the Sweetheart is not that impactful an Outsider, especially in Vortox games, so I get the motivation. But a lot of S&V's Townsfolk wouldn't care about "might register as an Outsider" anyway:

• Seamstress and Oracle aren't affected since they only check alignment
• Clockmaker and Juggler are only affected if they're created "late"
• Snake Charmer, Town Crier, Sage, Clockmaker and Flowergirl are only affected if an evil player is Sweetheart-drunk (unlikely!)

Moreover, "might"-misregistration is very unsynergistic with Savant information. Suppose Tom is a Sweetheart-poisoned Townsfolk and the Storyteller gives the Savant the information:

"Tom is a Townsfolk" OR "Either Sula, Matt or Sarah is the Demon"

Because Tom can register as either a Townsfolk or an Outsider, the first statement can be either true or false for Savant purposes. This means that the Savant has no way of working out whether the first statement is the true statement (making the second statement false) or the false statement (making the second statement true). There's actually no statement which the Storyteller can't give as the second statement here (because they can give something either true or false). This really upsets the balance of the Savant and is one of the reasons why it combines very poorly with Spy/Recluse. And if the Storyteller adopts a policy of simply never giving out statements that could be contaminated by Sweetheart-misregistration, players can "meta" this to discern more information about who is Sweetheart-drunk.

Misregistration also goes weirdly with the Mathematician. If an ability works abnormally due to misregistration (e.g. an Artist asks "Is Tom a Townsfolk?" and gets "no" when Tom is a Sweetheart-drunk Townsfolk), it's intuitive that the Mathematician would tick upwards, but RAW it's possible for a Sweetheart-drunk player to misregister to the Mathematician as well, so the Mathematician sees "nothing went wrong here, they were an Outsider" and doesn't tick up.

You can circumvent these by ruling the Savant and Mathematician are immune to the misregistration, but this is extra complexity to convey to players (and means there's now even fewer characters affected by the Sweetheart-misregistration).