As it starts with a password protected admin user on startup anyway, the majority of usecases would benefit from having authentication enabled by default
"Max Players" var was defined as MAXPLAYERS, but referred as MAX_PLAYERS. Changed the definition instead of the startup command to keep it consistent with other steam games.
A new egg feature modal was introduced in Panel v1.7.0 triggering when server has run out of disk space to provide more user-friendly instructions to both admins and normal users. This is unique to SteamCMD specific errors.