This might be a good idea and could set Apple apart from Google and Google Maps. An issue with any major mapping software is that it lacks 3rd party data. For example, take the University of Alabama Tuscaloosa. On the maps software it shows just the campus. What this means is that the maps are completely useless when you're on campus. Why not open up Maps to developers and allow them to input data such as building names, locations, and even further information like hours and offices inside? And the same is true for theme parks and other places. There's a lack of info about what's inside the complex. Plus this could help with corporate offices if clicking more info brings up a list of offices inside.