I agree that the maps app needs some work but thankfully I never used the other maps app much.
For the most part I'm ok with iOS6 but a few changes have me scratching my head.
The new App Store hasn't crashed on me yet and I love how you are not kicked out to the main screen when you download or update an app. I also like that you don't have to enter your password for updates or re-downloading previously deleted apps. What I can't understand is the change to searching; how could anyone anywhere, much less at Apple, think that seeing one search result at a time was a good idea. If I did a search in iOS 5 that returned 1,000 apps I would sometimes scroll through a few hundred of them. Now, after looking at about 15 apps I'm done, then I realized there is no quick way back to first result. Just a lazy design IMO.
Overall the music changes don't bother me except the fact that you can no longer delete songs or albums with iTunes Match turned on. I don't understand why this features was removed, is Apple really that offended that I like to manage my on music. LOL at everyone saying that Match is a true streaming service now, it's not and it is not that hard to prove. Yes, when you click on a song it starts playing, streamed from the cloud but, it is also being downloaded to your phone in the background and is not removed when you are done with it. Don't believe me, play the first 10 seconds of 50 songs, then go to Settings - General - Usage and see how much space your music is now taking up. That's right, it's the same amount as it would have been in iOS 5, nothing has changed in this respect. Only now, you can't remove those songs if you decided you no longer want them stored on your phone, not without turning Match off. Of course, when you turn Match back on you have to wait the 10 to 20 minutes it takes for it to rebuild your library, again. The removal of the ability to delete music seriously has me reconsidering letting my Match subscription renew next month.