To answer your questions anyway... :)

No memory card slot
No user replaceable battery
The camera is 2 megapixels, a bit crap, useless in low light, and can't record movies
It may be a few tenths of a mm thinner than the older one, but in total, it's about 7% larger ( by volume )
They got rid of the chrome back in lieu of plastic
It wont do MMS ( a major negative here in the UK )
You can't copy and paste

I want an iPhone - but without a better camera, and the 32Gb storage I have on my iPod touch - I don't see much point. The non-contract phone I bought for £45 2 years ago has built in radio, can record videos.

I am on my second Mac Laptop, I barely use XP at home, and I love my iPod - but the developers for the iPhone have made some utter brain-dead decisions imho.

Doug