I recall making this suggestion in an older post where I said if the zeds were too far they should run sanic speed..guess they used the idea for when there are less than 5 zeds in the map. Although the mechanic should be fixed up for the large zeds, fps endlessly charge at you, and scrakes...well they're skrakes. An idea would be a mini rage where they jog at you instead, upon an attack that hits they rage.