The lower mids and bass (incl. sub bass) is more prominent than with HiFiMan pads, and the extra amount of lower mids is slightly too much. This is creating a slight "veil" - a bit like pushing speakers too close to the front wall; the tonality gets darker and this veils the sound a bit.
I should add that I still have the stock quarter foam on while putting felt on the rest of the grill.
Anyone with Audeze micro suede pads and felt-on-grill mod who also removed the stock quarter foam - please chime in on how you hear the tonality.