*Yes, I did kinda get inspired from Ravencroft's Basketball Server*
Thing is, what if there was an actual NBA in Blockland? I mean, the NBBA could be a good name for it. The NBBA could include the 30 teams just like the NBA, except maybe in Blockland terms. (Ex: Chicago Bulls would be Chicago Bricks)
Also, each team should get like their own private server that's password protected, and the password's created by the Owner of the team. Players can access the private server (which is just the team's Arena) and practice anytime they want. The only time that the server doesn't have a password is on game days or special occasions.
Maybe even a special server for the NBBA's Annual Draft...and a special server for the Hall of Fame Building. Though even though this may never happen, it's still cool if you think about it.