Seed of the day

My idea comes from the game trackmania where they have this thing called "Cup of the day", every single day they get a new map where they have a set time to learn the track and beat it as fast as possible. They then get put into different lobbies where they race against people with a similar time. I think this would be amazing in Minecraft and would bring a lot of people in. As of now speedrunning is kind of a hard thing to set up, but if it could be in the actual game without downloading a third party and its daily?? Would be fantastic