1700 MHz??! You T-Mo guys kill me! I used to be one of you, but I got sick of waiting for them to actually release AWS and for someone to support AWS in a handset. It's in a handful of markets now, and there are about 4 mobiles that support AWS. None of them are very compelling. I remember hoping against hope that the E71 would have a version supporting AWS. When it became clear that AWS in a Nokia N-series or E-series was just not happening I bailed on T-Mo and went to AT&T. Best move I ever made too.
The customizable home screen is a killer feature for me. Coupled with the touch screen, this feature will let users work exactly how they want. Contacts, email, calendar, whatever, all laid out on a 3.5" screen. Yummy!
As for the phone, I think 5MP is plenty. Bumping it up to 8MP won't help unless you do something with the optics. I would have liked a xenon flash, but I think this will be just fine and dandy for me. Anyway, for serious pics I have a Canon digital Rebel. A phone camera is fine for casual shooting, and 5MP should be plenty for casual photography. I wouldn't complain about 8MP, but in reality 5 MP is going to get me the same pics.