walkman - 2:45 pm on Sep 27, 2011 (gmt 0)
If I have to guess, I am going to go with the type of site. If you got flagged for having a non-desirable-by-Google type of site and is written on their screen, it takes them 5 seconds to see if it's still the same type of site or not.
Most everything you changed was not a guideline violation in the first place - with the exception of the DMCA complaint, perhaps. If the reviewer has an indication of what the violation is, it wouldn't take very long to see it wasn't changed - and if they wait after the Reconsideration Request until the cached copy on the back end is more recent, they might well depend on that.