survivor suggestion

is it possible to add splash and knockback to survivor knife or something like that via a cooldown like 10-12 seconds so it can push the mass of zombies ? when surv gets surrounded by zombies it's imbossible to get away from the zombie horde. for that price it's unworthy to buy because the survivor always gets killed if 3 or more zombies gang up.

The cooldown can be changed to any amount that can be balanced for both teams. also don't forget vips can use vipmenu during surv and buy.for most of the maps you can never escape as surv. im not talking about plague or swarm rounds where there are multiple survivors.