I have made some simple modifications to the earpads of my LCD-X and there are improvements in soundstaging and musical instrument separations.
See what I have done here:
Just try it out yourself and it is simple.
I just ordered myself a unused pair of Alcantara pads for the LCD-2/3, they will arrive next week. When I auditioned the LCD3 before, I found them "stronger / stiffer" and thereby "higher" resulting in a slightly larger distance of the driver to the ear. I hope they also fit to the LCD-X...