A integrated parkour mode into fatehub. This would prettymuch be this plugin listed here: https://www.spigotmc.org/resources/hubparkour.47713/ just better integrated to work with your features (disabling double jumping, custom scoreboard). Look at this kinda like a separate mode, the players inventory would be cleared. This is demonstrated extremely well on this server: play.skyclash.org:25565
I can look into it but can't promise anything.
Not possible at the current time.