As for 8, it's screaming fast (especially in boot times) and much improved compared to 7. The only thing that killed it for people is the new start "screen". With an alternative start menu, I'd actually rate it above 7. The new apps are mildly annoying but mostly optional, the old equivalents from 7 are all still there.
Looks are important if you want to sell it to a lot of people. Changing a very (perhaps overly, now) popular piece of software to an entirely new look? Its either
good (in which case you did amazingly) or people will
hate it because its much too different to the one they had before, which was just fine (in which case either you fucked up or you're trying to change too much at once). And all you're getting with the new look (or with an alternate start menu you have to go and retrieve from the internet) is more boot speed, a completely useless store, and mostly optional apps that do things you could do before?
Thats not an amazing deal there Thief.
And they
had the bloody settings unified. Everything of importance that I know of was in control panel, or administrative tools (which itself is in control panel)
And then they add a useless settings menu which has done nothing to support it being split off in my experience, and is actively worse in web browsers case (Oh, you want to switch primary web browsers because the user broke one of them and it would be simpler to install another one/import bookmarks and fix it later? And you want to use the button that has long existed for that purpose? Fuck that, do it in the settings menu we added!)