As it stands right now Jason's grab kills give the player no incentive to use environmental kills due to its short activation time. It can be triggered almost instantly after grabbing even before a counselor who is next to Jason and constantly swinging their weapon can even react before his killing animation begins. I think it would greatly balance the kill if it just added a short 3-5 second timer to it before it was allowed to be used in order to prevent the instant grab death.