The only real reason I see for the approval process is safety - your phone has direct access to your money, unlike your computer. Maybe Apple could make a "safe

The only real reason I see for the approval process is safety - your phone has direct access to your money, unlike your computer. Maybe Apple could make a "safe mode" which would not allow an app to be destructive, and only require approval process if you the developer want to use some non-"safe mode" features. That would significantly decrease the load on their approval teams.