Gave a bit more thought to this idea, how it would be feasible
There is a base plate / PCB with vibration motors mounted on it, on vibration motors there is a silicone application, a regular switch plate is put onto the vibration plate, each switch's plastic bottom resting on the silicone's to absorb/transfer the vibration
This separates the switch dynamics from the vibration layer, keeping the simplicity and maintainability of the mechanical keyboard