Add a feature that allows for more expandable witch hut that is also more expandable by technical means than the current which hut based farms. Maybe something like a wither rose that allows only witches to spawn near them or something like a iron farm where certain conditions increase witch spawning. This could be the items in witch huts like if a crafting table and a cauldron next to each other with a flower pot with a mushroom in it with different sky light levels on either side of it similar to how old iron farm doors worked. Just an idea thanks for reading it.

You can always make a bounding box of a witch hut larger just by manipulating of its dimensions in nbt of that chunk. Not sure why you need a mod to do that.