and point #2 would be amazing (although I don't know if it would work over EDGE).
That was my first concern. WiFi, no problem, but unless AT&T gets a better HSDPA system, video conferencing might be horrid. I know that many phone manufacturers are now forced by the courts to stop carrying 3G chipsets soon due to an impending lawsuit brought on by another company over Samsung (who I believe makes the 3G chips?). Until then, I don't know what that will mean for HSDPA/3G/EDGE, etc.