One of SK's claims to fame is its randomly generated levels, "So you never play the same level twice", but how about implementing it where you actually notice it? My idea is to make Boss levels also randomly generated. That way, doing multi boss runs is less boring, and it would be a bit more challenging, not knowing what's coming next.
Tell me what you think.
Just do Arcade instead, Boss levels are unique. It's wouldn't make sense Doing Treasure Vault and Graveyard to get to Royal Jelly King.