This would remove the teleport effect when changing direction. Almost every game has one of these animations. In Skyrim if you walk forward then stop and turn the camera to face your character, then walk forward again you will "blink" or "jerk" around and start to head back the way you came. Compare this to how it works in Fallout 4 and you can see that in Fallout 4 their is a animation that turns the characters body around before walking in that direction. Adding this animation would add a small delay before heading in the forward direction.
This animation will have a number of benefits.
Mods that include Hdt physics will have smoother animations
Will make the game feel newer
I am not sure if this is completely possible due to engine limitations but it seems like a good idea for anyone working out the many subtle game oddity's that have slipped under the modding communities radar.