I dont have any, unfortunately. I only use webalizer in various different configurations. Just some common sense brought me the conclusion that it is my 5th biggest BW eater.
Actually, my statistics were from Awstats. Webalizer is more granular: For October, site 1: Hits KB 4.82% 7.53% /misc/drupal.css 2.66% 5.21% /sites/default/themes/blah/style.css Site 2: Hits KB 3.67% 3.84% /misc/drupal.css 1.99% 2.77% /sites/default/themes/blah/style.css So, you can see that drupal.css is more of a contributer.
I not proposing to do this for core, merely asking how interested people are in this. I am only giving this info, for others that might be interested. And for those who might want to work on drupal.css in future to consider. Too much has been said about that drupal.css already :p.
I think that drupal.css can easily be overridden now in themes with no code changes? Am I correct?