So, instead of just bellyaching over Maps’s shortcomings, how can you help improve the quality of information? Easy: Report problems to Apple as you encounter them. It only takes a little longer than composing a 140-character complaint, and it’s an investment in a better Maps in the future.
For my own home town I rarely use maps. And in my light usage of the iOS 6 maps app over the past few months I didn’t notice any shortcomings in its data. However, while in Dallas last week, the Maps app couldn’t find my hotel. In fact, it couldn’t even find the address of the hotel. I had to call them and get directions over the phone (gasp!).
I’ve since reported the missing location via the Maps app and will continue to report problems I come across.