iOS 6 has plenty of stuff that will be taken advantage of by creative developers. It's largely a "Polish" release but there's some good stuff in there for everyone.
There's really not much missing once you realize that
A. Widgets are not going to happen on a larger scale than NC
B. There will be no file system app
And that's one of the reasons I don't think I can update to the next iPhone until it's jailbroken... I've become so accustomed to my Jailbroken 4S over the past couple months that I don't think I could go back. Just losing things like nested folders, wi-fi, cell data, hotspot, etc toggles in notification center, widgets, themeable icons and UI, iFile, awesome tweaks like SwipeSelection, where you can move the cursor by swiping across the keyboard.....yeah, I don't think I could lose those now.