This designer gets the weather icon correct - the gradient should go in the same direction as the sunrise & sunset - lighter at the horizon, darker above.
Logically, it should be a radial gradient with the light end centered on the sun and the dark end away from it. Ideally, all icons should look like they're lit from above for consistency (light end of gradient at top, dark at bottom). Having some buttons lit from above and some lit from below (or some bulging out and some carved inwards) looks terrible.
The camera icon should revert completely. The lens is the most imporant part of a camera - the camera body is a skeuomorphism. Other than that, I can live with most of the new icons (the redesign does some better - ie, Settings but others are too simplified).
They don't, it's an illusion because the background is a flat grey and some icons are darker than others.
It's consistent because every icon has a gradient, even if subtle - in contrast with the original, where some are flat and others have a 3D effect from the gradient, and some even have a gradient on the opposite direction making a complete mess of convex/concave illusion on the home screen.
It's also consistent because all icons have just the right amount of detail. Compare the safari, clock, compass, notes, reminders, newsstand and passbook icons.
Lastly, he modified the margins back to the original proportions, which are better balanced. Compare the iTunes and App Store icons.
