I thought I'd link to a Japanese website finding goofs within maps (I still can't get over how Shinjuku looks like a golf course). After all, it's easy to get into an American/English only mindset and not consider the substantial number of customers in other countries.
Looking at these images worries me a bit about how Apple will integrate more density into these maps. The icons for restaurants, the brown little fork and knife (laughably western), if increased provide absolutely no visual information on quick glance. Likewise, using the same train icon for the metro and JR stations is not helpful (also, not connecting the related stations provides a terrible UI experience).
Image
http://www.itmedia.co.jp/news/articles/1209/20/news034.html
Image
http://ascii.jp/elem/000/000/727/727846/#eid727851
The equivalent map in Google maps allows me to quickly identify train company (toei, metro, JR), the stations connected on a line, the MAJOR station, and even gives me all of the station names at a glance. Not being able to tell where Tokyo station is (or even be able to spot the difference between a huge station like Tokyo and a much smaller station like Yurakucho) is crazy.
Imagine if Apple complies with requests for greater density, and the icons don't expand in varietythese maps will be a mess!
Google was also multi lingual. Apple maps won't find places like tokyo station unless you type in japanese. Thats fine for the easy kanji you see everyday, head west a couple of hours and start trying to find some places.
The amount of errors with places, locations, the overlayed data in some instances is at least 10 years old.. it's like a group of drunk 4th graders have submitted a maps application for the science project and Apple said "Perfect" we'll take it.
The only thing that stops me jumping off the iPhone is the amount of $$ i have invested in iPhone applications. So realistically I'll just stick with my jailbroken iOS5.x iPhone4x like most will. I'm not even sure a Google maps application will be enough for me to upgrade as I want it intergrated with the rest of the apps. I guess when a proper jailbreak comes out along with a google app and a cydia app that lets you change the default maps app then it would be worth doing.
Apple really dropped the ball on this one.