i might have used the maps app once in my life. so i could care less how good or bad it is now . i use the nav in my car when i need directions
I have a stand alone nav in my car as well and, while I have never used the Map app for directions nor do I think I ever will, I still have ample problems with the new maps.
As I've said elsewhere, I regularly use a bunch of fitness apps to map, track my progress, and share/ compare with my friends. Not the most helpful anymore when the maps are outdated and don't fully make sense.
If I need to tell someone where I am, I could (in the past) open the map app, center it on myself, drop a pin and have an accurate address. Nearly every time I've tried it with the new maps, it's (if I'm lucky) a few hundred feet off.
Geofencing is also completely gone. Granted, even Google's Maps had my location a little wrong, but I was able to drop a pin, see what address it thought I was at (Google had me 2 doors down), and go from there.
The closest address Maps now gives me is 400 feet away in the middle of the woods. Awesome. No more 'remind me when I get/ leave home.'