I was wondering about this "better screen" deal every thing you posted is correct.
For some the voice control might be useful but right now I don't feel the need for it.
As for using the phone as a camera I guess it's a good deal, but my small older Canon SD1200is has a 10MP lens and holds a nice memory card. Takes great pictures and videos.
Camera phones are useful to many not implying that they are not, but I don't see myself quit using my Canon 7D and 60D or Canon 560 any time soon.
I fully know that the Camera will always out do the Camera phone even though from what I have been reading about the new Nexus phone coming out it is going to have a impressive camera and software on it
"Single-Motion
Panoramic Camera
With Galaxy Nexus you get a high-end camera with zero shutter-lag, automatic focus, top notch low-light performance and a simple, intuitive way to take panoramic pictures. No stitching needed. Take amazing photos or 1080p videos, edit and then share them right from your phone."
I am hoping Iphone does a nice screen upgrade on the iphone 5 cause this phone is also getting
"Vibrant high-definition display
Galaxy Nexus is the world's first phone with a 4.65" high-definition sAMOLED display making text, videos & games look crisp, vibrant and rich. With an edge-to-edge 720p screen high-definition, videos look amazing and the unique Contour Display curves nicely to the shape of your face and makes it easier to hold."
Plus according to google Android 4.0 will compete with Apple new iOS. I do not bring this up to start any apple hate, I believe competition is good and with this phone being released the iphone 5 might get some more impressive upgrades which in turn means Android will try to top it, competition is good.