Map Mobility. It's a problem for a large portion of the killers. I think most of us can agree on that. Killers lack map control because they don't have mobility.

My suggested solution to this problem is: Killer-Only Shortcuts. These are shortcuts that killers can take, that are not available to survivors. How many there are on each map would depend on the map. (Maps like Shelter Woods might not need any shortcuts, while maps like Red Forest might have more)

You could even potentially let survivors 'temporarily disable' individual shortcuts. The killer would receive a notification, and the shortcut would be disabled for something like 60 seconds. (I'm not sure how long it should take. Maybe 15~ seconds).