For race, deathrace and lolrace: you guys can add the option of doing specifically supermario3 in reverse without adding anything new (except /admin_team red i think is the command)-- the only hard part is at the start and from there the map actually becomes easier to complete than the normal way- its 90% flat surfaces u just dash through.
you can also add race map in reverse but then you would have to heavily enforce the rule for not cutting across the map.