Pass on the story! Collaboration!

[DIGI Byte]

from my modding experience I'd recommend having a set idea that can easily incorporate other peoples ideas/stories, like my suggestions of a horror type fun house in a castle with multiple doors that take you to other places, its a strong way how you can incorporate others ideas while keeping game play/ style and feeling constant with a dreariness to it changing

personally I'd love to see a haunted fun-house castle where you need to get a key from one room for another, you enter a door and it ports you to a sun shiny beach with banjo-kazooie music playing and a bench with a key you need to get.
but if you touch the key something bad happens and you have to get back to the door which you came through which is just kinda sitting there in the sand like its nothing important