Don't show street view, show the camera's feed and correlate it with street view, the GPS position and the compass in order to superimpose directions on the image.

Light condition changes would be a pretty tough problem to solve though.

Isn't it extraordinary that you're carrying a device powerful enough to make your suggestion plausible?

Yes, and it's equally depressing that it's implausible you do that for a little while without totally draining the battery.

I can see it now: "Turn right after passing the building that was torn down 5 years ago".

Streetview is not entirely worthless, but it's hardly something to rely on either.

because at a glance its very noisy and confusing. The maps are simple and indeed part of the map system is to remove detail that you dont need. On google maps nav on android it does bring up streetview when you get to your destination.

Perhaps they could have a button on screen to flip to a streetview view.