Yes. The Shure pads didn't do a whole lot to improve the soundstage to my ears either. Making the stock pads deeper with stuffing does increase the soundstage but also decreases the mids so I didn't like it. Maybe if you really play around with the thickness of the stuffing you will hit a sweet spot but too much work for me.
Finally some1 who notices the differences. You're right the more deeper you make the more it affects mids (more V-shape sound is the first thing you should notice with deepend pads and I personally prefer that up-front mids so it's very critical to me the applied thickness), you only have to apply very thin layer and it also gets better after a little while in case you're using tissues or paper towels for example so it compresses, then it starts sounding better. I tried to exchange the paper towels I used some time ago but since I couldn't get the exact same sound back right off the bat I said just screw it and put the old paper towel inserts back. :P I tried also with the foam rings from the Hifiman leather pads but they didn't work out well as stuffing material, it became too boomy/lacking highs/warm so the material itself will play some role too.
Edited by RPGWiZaRD - 6/6/13 at 12:38pm