The whole idea sounds alot futuristic, I mean changing profiles & opening applications automatically based on your location?
Maybe it's the word "automatically", that makes me suspicious. Why not have an APP with different profiles that you can fill with predefined actions like this:

profile 1: (if coordinate x= between a & b & y = between c & d)
"open email client, open new email, mute phone".

profile 2: (if coordinate x= between e & f & y = between g & h)
"open skype, call contact "Tom"".

And everytime you execute the APP, it gets the coordinates via gps & executes the according profile. That would be a bit more manual, but still pretty cool, useful & battery life friendlier.