Except for the recessed audio connector, most of that list will hopefully be addressed by software updates shortly. That's why I haven't bought one just quite yet, I'm loathe to dump that much cash on a 1.0 product.
The screen getting dirty as a killer fault, though, is just silly. It's glass, it doesn't scratch easily (I saw people scraping it with keys on purpose, putting it into a ziploc with metal stuff and shaking it, etc) so I'd just wipe it on my shirt if I had to.
I'll probably buy when the following are resolved:
1. Hands free dialing (It's a popular request)
2. File system browser
3. It's gotten at least one hardware revision.
4. I get the ability to use it as a bluetooth modem.
Under the nice-to-have list, I'll put the 3G speed connectivity. They just bounced the speed of the data network from 40kbps to 200+kbps, but it's still kinda pokey. I'd expect to stream most of my music off of my home machine when I'm on the road, that'd be a pretty easy thing to code from scratch or to expect to see as a feature from iTunes, so I'm not worried about the 4-8 gigs limitation.