Been a mac user for 20 years. Personally I think windows 7 is way better then mac os x on many levels. What you outlined above means nothing to how productive a person can be while using windows 7.
So what there's circa 95 icons still circulating? your point is moot.
In regards to legacy. Do you think 90% of the people that use a computer even know what that is? Do you think I care that legacy is still a part of the O.S when I am working on a project or using the computer to do daily things? Get serious dude.
Legacy never affected my capability to get **** i want to do done.
I am deadly serious. I don't believe my “point is moot” because my point was most certainly not about the circa 95 icons.
“Legacy” in terms of UI decisions is bad, because we have learnt a lot about UI and HCI since 1995 (or whenever these screens where first conceived) and are still learning a lot.
There is only a 20-30 year history of building graphical user interfaces and the length of time that GUIs have been made specifically for the general public (not business) is probably shorter than that.
Quite frankly there are often better ways to do things the way they have always been done. And by better I mean quicker, simpler, more productive, not “prettier”. Although form often follows function.
Which is why the newer control panels in Windows 7 are radically different to the examples above (look at the aero appearance settings for example):

Now let's look at that screen where you erroneously thought I was complaining about resolution and aesthetic of the icons.
I will confess I am far from a usability expert, someone who is will know more than me:
[1] Why is it fixed width? The file path to the icon file cannot fit. And obviously the icons cannot fit either. Surely at least give the option to make it larger to fit more on screen?
[2] Why does the icon panel scroll horizontally (left -> right) and not vertically (top -> bottom). This is inconsistent with many other dialogs.
[2] How are the icons organised. If they were grouped by category (hardware, media) it may help the user find one quicker.
[3] If you pick icons from multiple files there is not easy way to switch between them. Maybe a list of recently used icon files would help.
So YOU can be productive because you've got used to all the quirks, so what? It doesn't mean other people won't struggle when presented with bad UI.
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