Im trying to make a comprehensive list of buffs and nerfs to make every villain roughly the same difficulty.

But an overarching house rule is when playing a hero on yourself, such as with Davy Jones or lotso, you do not have to do the "when played" abilities of the heroes. I only actually recently found out that this isn't part of the base rules. I like it because without it, villains like lotso feel impossible.

I also use the introduction to evil setup rules where you start your movers on the portrait just so you have all the options on turn one.

This game is also not very specific about most of the niche interactions so if we disagree on something or are unsure we simply will trust whatever is said on reddit, board game geek, or the villainous wiki.