My take is simply that - like it or not - XP and luna have become this sort of brand / cultural icon. windows = blue and green. That's a good thing! And im not saying people dont like aero. But when something is as popular as XP - why remove most of it?
ps - what would you suggest ms do to increase adoption of main products?
I must say that I agree with most of your gripes. Most of these are just common sense.
1) A Glass Luna would have been great
2) Just tried to find the classic menu in Windows 7 and it is not there, so that was silly
3) I cannot beleive that has still not been rectified. they appear to want to reduce your mouse clicks, but their current design just creates more. I still do miss this
4) Like option 2, users should have the option to configure things like before
5) Yes for backwards compatibility
6) Yes for backwards compatibility