I think the 3D view depending on how they are doing it may very well be a decent replacement for street view (depending on if they just model the buildings or actually get photo realistic skins for the buildings).
3D view only works in large metropolitan cities. And street-view is almost a requirement for me as it is the only way you can verify addresses at a street level. No way 3D view is a replacement for street view. In fact, the whole "3D" in Google Maps and Apple Maps is a big waste of time. It gets lots of headlines but will not be useful for 99% of people.