I get great 4-5 bars everywhere with my first generation phone, and I personally think the 3G feels cheaper because it's a lot lighter.
Edit: Now that I'm thinking about it, it's thinner and made of plastic, with basically the same guts, it has to be somewhat lighter, no?
It went from 4.8 oz to 4.7 oz. I suppose it's POSSIBLE you can tell the difference of 0.1 ounces, but I think it's more likely that you're just imagining things. That's not really enough to be obvious.
That's something, I guess aluminum really is pretty light then. Does the 3G hardware weigh like an ounce or something? It has to be something internally making it nearly the same weight right?
Next iphone should have a rubberized plastic back like the contour cases.
Think about it like this: less chances for cosmetic defects to torture perfectionists like yourself.
Wouldn't the aluminum mess with the antenna though?
Yes. But apparently they didn't take advantage of the plastic anyway since the antenna for the 3G iPhones are the ring around the camera, the bezel around the screen, and the head phone jack. Aluminum wouldn't mess in that case.
As for features, the new phone will obviously be thinner, and the entire front of the phone should be a touch screen. They should remove the physical home button and make the home button virtual.
How can you do a hard reset to the iPhone with no physical buttons?