Not even joking, this idea came to me in a dream. So here it goes:
So it would be cool if there was an area of the hub where you could bridge practice, both straight and diagonal. Would also work as a sort of microgame like there used to be in the arcade and have a timing system similar to the Skywars microhub parkour. (Possibly have leaderboards??)
I just think it would be cool to bridge practice a little while you wait for a friend to come online, accept your party invite, etc.