Yes it's pretty and fully featured for the general population but I couldn't not have GPS in my phone ever, ever again.
I would ask how many iphone owners have ever had a phone with GPS built-in?
I've ditched my 4g ipod, pocket pc, nokia phone, creative Zen (for video playback) and tomtom for the o2 XDA Orbit. It works that well that it's the first phone that I truly shove in my pocket all the time and forget about because it works (for my style of use) flawlessly.
To get a shiny iphone (which of course I want one of the first - if it wasn't old news in the states) - I'd have to give up and go buy a seperate GPS which to me, now, I wouldn't ever, ever do again. I'm sure it'll be fine for the average person in the street though.
But for me - GET WITH THE TIMES APPLE. I like your design, interface and hype control but, like your natty ipod, this stuff has been around for years and you've only gone half way. Please, please, please use the tech that's been invented recently instead of doing old stuff better so we can all have shiny phones.