Ideas for Walking Perks

Survivors are just too slow when walking around, and running leaves marks that the killer can track. There is a perk that increases Crawling speed (Tenacity), a perk that increases Crouching speed (Urban Evasion), and several that increase Running speed (temporary effect). Why not a middle-ground perk for regular walking?

Brisk Walker
Your increased sense of caution allows you to effectively move around while trying to prevent the killer from tracking you.
Increases your base walking speed by 12/18/24% and produces a scratch mark every 3 seconds when walking.

Walking Speed - 56.5%
Brisk Walker I - 63.4%
Brisk Walker II - 66.8%
Brisk Walker III - 70.2%

Synergistic with Lightweight, which would eliminate all scratch marks produced by Brisk Walker (requiring 2 perks to be fast and stealthy).

And just so the killers don't feel left out, how about a perk that while holding the crouch button, the killer would actually move slower while decreasing their terror radius. Could either be a new killer perk or a rework of Insidious (to reduce camping).

Your increased sense of deviousness allows you to sneak up on unsuspecting survivors.
While holding the crouch button, decreases your base movement speed by 10/15/20%.
Suppresses your terror radius by 12.5/25/37.5%.

Walking Speed
96.25% (Nurse) - 86.6%/81.8%/77.0%
105% (Shape T1) - 94.5%/89.3%/84.0%
110% (Hag, Doctor Treatment, Huntress, Spirit) - 99.0%/93.5%/88.0%
115% (Trapper, Wraith Uncloaked, Hillbilly, Shape T2 & T3, Doctor Punishment, Cannibal, Nightmare, Clown) - 103.5%/97.8%/92.0%

Terror Radius
6m (Shape T1) - 5.3m/4.5m/3.8m
16m (Shape T2) - 14m/12m/10m
20m (Huntress) - 17.5m/15m/12.5m
24m (Hag, Nightmare, Spirit) - 21m/18m/15m
32m (Trapper, Wraith, Hillbilly, Nurse, Shape III, Doctor, Cannibal, Clown) - 28m/24m/20m

Considering the Pig already has a crouch button function, this perk would not work on her. Could probably enhance her crouching and ambush abilities. For Freddy and Huntress, this could also suppress their lullabies by the same amount or completely silence it. What would be nice for this ability is allow the killer to do a partial crouch to make them less noticeable, but not a full crouch like for the Pig. If the killer perk is too much, it could just have a base speed reduction of 10%. Ideas are welcome.