I've considered that. But it would take ages to get it here and another ages to get the right o-rings here. I bought 4 black classick o-rings, but they are incredibly hard and expensive. About 2 times more expensive when you don't buy a buttload of them...
It depends on if you're ok with soft touch.
Because the soft orings will make your keys very quiet but feel like bottoming out on a rubber dome.
The harder one -somewhat- reduces noise, preserves decent bottom out rigidity.
I personally use silicone rings I've cut out of an old silicone sheet the went under old style rubber dome keyboard.
look for ghetto rings thread.
They are much softer around 30A, almost no noise from bottoming out.