A command which teleports you near the KOTH Box, you would be able to set points which then the player would be randomly teleported onto, so /KOTHmakeTPpoint {KOTH box ID}, /KOTHdeleteTPpoint {KOTH box ID} {Point ID}, then a player command -> /tpkoth
If possible block zombie+items spawns inside the KOTH box, as a toggleable setting in the config for each of the KOTH boxes