Add a stamina system. Possibly for a new game mode
Basically. Survivors can only sprint for 20 seconds or so before a stamina bar runs out and they can't sprint or use exhaustion perks or do fast actions. They can still do all other actions like normal including dropping pallets and slow vaulting. Every second not running recharges a second of run time. All exhaustion perks besides adrenaline cost 5 seconds worth of stamina to use with no other cost. Adrenaline fills your stamina to 200% max and heals you 1 state with no speed boost.
To compensate remove scratch marks entirely. All of them.
Might at least make for a cool alternate game mode cuz it would definitely be a HUGE change