No offense intended, but if you just wish it had Turn by Turn GPS then you don't think it's perfect.
Others have effectively pointed out the shortcomings in the current Maps app. My personal wishes for additions include the following:
Both of these things would save consumers money immediately.
- Multiple route options including finding routes without tolls!
- A "Find nearest gas" / "Find cheapest gas" utility
Try Gas Buddy for finding cheapest gas.