Q:
Expended experience (question for arena net )
A:
Scrapped. The real, truly dedicated players actually play the game, thus more resources dedicated to something within the game is better than something outside it. Something like this may come down the line far, far from now, but it would seem that they mostly rely on 3rd party ones made by players though the API releases.
With the release of the APIs, I think it is now in the hands of the community. They said as much some time ago.