I can only see 3D maps as a gimmick, so I can't bring myself to care too much that it's broken. I'm slightly surprised that feature shipped in that state, but meh.
What I care about: can it get me where I'm going? It's 2012 and I've still found nothing that can do that without occasional issues. This version of Maps hasn't been in my hands long enough to judge it properly. Considering the update was just released to the general public less than 48 hours ago, has anyone had time to judge it properly?
Worth noting: I've had the old Maps try to send me through concrete walls, or direct me 400 miles away looking for the nearest branch of a bank. My dedicated GPS unit has told me I've arrived at my destination… in the middle of a busy highway, and it too has asked me to turn through concrete barriers more than once. I've had both direct me to locations well off of where I was trying to go.
This is all from actual usage.
So if anyone knows of something that doesn't have these problems, I'd love to hear from you!
It's not just the quality of the maps that's an issue. It's also the quality of search. Google maps isn't perfect either but on top of having better map data is has better search so for example searching for "gauteir exhibit, sf" actually finds the De Young Museum in San Francisco even though I didn't name the museum nor did I spell the name correctly. IOS6 maps just said "no results"
Here are screenshots of an example situation I ran into yesterday, while trying to pick up my iPhone 5 from the UPS Customer Center:
Most errors seem to be that of string parsing - the biggest sin is not recognizing town/state portions of search strings consistently.
Ironic since I'd bet some of the best language parsing people are busy working on llvm and clang somewhere else on apple campus.