Castles and undead knights

Hear me out...

CASTLES AND UNDEAD KNIGHTS

Yay but how do i imagine it?

Very simple! Castles should generate on top of high mountains (not on every mountain) and there should be undead knights that try to defend the castle (maybe similar to skelletons but with ripped armor and iron sword). I always wanted this to be a feature in the game for like a decade. (i like this idea alot because Castles fit Minecraft alot and some of the old minigame maps and tutorial worlds were castles)

How is my idea?