I'm a dreamer. I still want to buy my iPhone unlocked one day. And with UMTS along with GSM/EDGE. And the camera should be autofocus. And 3rd party apps are kind of a must, I believe, and certainly hope Apple will change its mind.
For Steve's mentioning it (that 3rd party apps could bring the whole mobile network down) alone, I hope that there'll be a hack of some kind where iPhones bring down the networks _without_ official 3rd party app support. I really wonder where that notion came from. At least _I_ haven't ever heard of wide-spread network attacks through, say, a Symbian-based platform, which _widely_ adopts 3rd party applications successfully. Heck: Even the Windows Mobile platform didn't have such a problem AFAIK.