Really the UI is pretty good on the iPhone, I certainly don't want an exact copy but would like something that approaches the polished and fast nature of the iPhone. Likewise things like the process of application installation are something to be admired IMO. OTOH there are many bad things, one of which being the lack of hack-ability and the App Store constraints. I really wouldn't buy a phone that wouldn't let me write my own software and install it.

As Atilla said, if there were an opensource (i.e. Linux) phone with kb and a nice polished UI then I would also buy one. That doesn't mean I want an iPhone, but it does mean I admire some aspects of that platform (in the same way that I like the Android status bar thingie and the services integration).

Come on Nokia, let's see some new hardware that we can at least help with.