Survivors running on red scratch areas start having an increased chance to "stumble" (with an even greater chance inside terror radius) resulting in something like a half second stun. It would also make the game more like EVERY horror movie in history and cut back on trolly behaviors and make the game far more strategic…
Deep Wounds timer doesn't make sense... Sprinting, vaulting, any action outside healing it should make it deplete faster not stop entirely. For a heavily survivor sided game this would make it less so.