Actually you lose a couple of really useful features, to gain nothing at all, unless you have a 4S.say bye bye to street view. So you lose a feature to gain something other phones have had for 4-5 years. Neat isnt it?
What "cool" things do you speak of?
The problem is that it took Google 5 years to cover nearly 40 countries around the world. Bing has been working on their equivalent service "Streetside" since 2009 and it doesn't cover anywhere near as many places as Google does.I am sure that iOS maps will have streetview. I recently saw a few TomTom trucks in my city that had streetview cameras mounted.
Since the maps are provided by TomTom and "others", I am fairly certain we'll see it make an appearance soon.