1 killer 4 victim is unbalanced

i have a high level survivor and mid level killers, they should introduce another killer to balance it out, its not possible for 1 killer to kill 4 victims unless he camps the hook, because one victim will always try to use pallets and make them follow them around , then by the time you chase one of them around and 2 people already setting off generators and opening the back door on the otherside of the map or make the maps smaller it is not possible for a killer to run to both gates even if you put traps there.