Damn, I don't even own those phones and it's a REALLY good read. You're REALLY passionate about this hobby to go through all that. My kudos to you.
Also, you ever wonder what that mod, or a mod as similarly as you could get to it, would do to a DT770???? I'm sure the Dynamat had a LARGE portion to do with the SQ changing. Dynamat works WONDERS in cars, I can only imagine what it does to "small speakers" in really close proximity to your ears.
Again....a major kudos for that.