The reason the home screen is a row of apps is because Apple's focus has NEVER been the home screen.
It's all about the apps.
Actually, now that I think about it - my "desktop" is a big grid of "apps" and folders. So what exactly does being "desktop class" have to do with some additional "functionality" on the home screen.
Its a portal, a screen you aren't meant to be on long.
This. I feel that if you are into widget (not that its a bad thing) i feel that that particular feature meant you spend time on your homescreen more than anything.