One thing I forgot to mention in the OP, but you guys reminded me of it: I'd love to see an expansion on witch culture. Like witch-exclusive lots, magic schools or classes, witch-related holidays or events (Walpurgisnacht, or WitchCon 2019), a Witches Council, or maybe witch police that try to stop witches from using magic publicly. (Or just gently remind you not to do so, since having NPCs come to ruin your fun might be annoying.)
Luckily, all of these can already be done through player stories and interactions, but it'd be fun to see what the devs come up with.
