I'd love to see quick on/off switches available on the home pages. ie turn on/off bluetooth, location services, Wifi, 3G etc... That would be great for battery life issues.
BTW, my phone also has the issue with low 3G in some areas. And when I turn 3G off, it goes to full bars. I just dont think the phone defaults to 2G when 3G is low or non existent.