One gauge I'm using to see how they are responding to problem reports is to visit the Hoover Dam occasionally, in 3D mode. The collapsed highway bridge there got a fair amount of the early press as an illustration of some of the problems in the Map App. As of this morning, it's still sagging like a rubber hose. Perhaps there are more pressing problems with maps, but I would expect them to assign these well publicized glitches a higher priority.
10/3/12 at 9:13am