There's not been a 'designed for windows 8' application released yet. An application that isn't an app, but a full fledged program you'd run off the desktop. Hard to say there aren't improvements when only looking at pre-existing applications. That's not to say anything new will illustrate any improvements, either, but it is possible and no one seems to be willing to even consider that fact. No one seems willing to consider that the start screen could be a phase one type thing that will make boatloads more sense down the line. I'm not saying that's a given either, it could very well get dumped for the PC market, but all we've got to work with at the moment is pre-existing software.
I'm not saying all of you made up your minds after a day or two, most probably did not, but a number of vocal people decided they hated it in the first day or two and never gave it a chance. If I went of initial feelings and impressions, i'd have dumped my android phone after a month and gone back to an iphone. I'm glad I didn't though, because after using it a while I find it much better.
I (perhaps you, too) have been around since Windows 1.0 (and before). So I'm not unfamiliar with whining on every major release which I think started around WinME(?). (I think complaints in the past were mostly on the engine though, not the interface.) What you're saying about "hated it in the first day or two" to me goes without saying. That's going to happen. But still there could be valid complaints.
I really think MS missed out on some basic philosophical stuff on the Win 8 UI. Then it basically altered my work environment--like someone walking into my office and changing everything--without the option of getting my old one back. So I'm feeling kind of forced into a situation right now. How can I possibly like change, phase one or otherwise, if done that way, that is, forced?
EDIT: When I click the Games tile, it takes me to XBOX. That to me is like validating the cause of my son's plummeting grades. Incorporating it with Windows which runs majority of desktops at work, home, and college to me almost sounds like MS sees the future (of America) as going the way of gaming. (I'm just glad my son, when I offered Win 8 to him on his PC, didn't think so. He wanted none of it.)
EDIT#2: The Photos live tile is absolutely not the way I want it to behave. I am a photographer (hoping to succeed in fine art). So my Photos folder contains "work" photos some purposely underexposed some purposely overexposed, as well as my finished artwork. (I do HDR.) I don't want them showing randomly on the Photos live tile because the under- and over-exposed ones look ugly. If I remove more and more tiles, there'd be pretty much nothing left on my Metro screen so what's the use?
EDIT#3: I don't have a camera connected to my PC so I'm not sure what the Camera tile is doing there.