Usage: /follow would be used to see if people are IG or not. If IG, gets teleported to the game in spectator mode. Why: To make it easier to wait for people at the lobby and tell when they are close to being done. Cons: May be used to find people who want to hide, help other IG players strategize. This is kinda similar idea to /spectate but whatever, post what you like.
What would be amazing, is if /follow would be a custom command that would just show a players last login, but unlike /find, not tell a players IP. Maybe breezey could figure something out c: