technically , Orings WOULD help.. because if it reduces travel, then the key return will be of less force than if it had descended further prior to snapping back.
However, the difference would not be as noticeable, because once the bottoming sound is gone, the topping-out sound is the only one you'll hear.. Thus while it is "technically" more quiet, your auditory system will still perceive it of about the same loudness relative to your environment...
Because in state of quiet disposition, the motor protein on the hair receptor inside your cochlea will relax, thus heighten your audio sensitivity,
You lose all the gains you've made.
apparently the hairs in your ear is capable of detecting the movement by the width of a single hydrogen atom.
Awesome, yet annoying.