Firstly, Google Analytics does not give you
page information easily, or at all.
Secondly, you need to know the users' behavior
And thirdly ... Nothing much. It's already here ...
A script ...
... embedded in your page ...
... and an app key ...
and wants to improve
its user count,
revenue,
anything that ties to the usage of their website
It's a very simple but powerful system that scales very easy and that will make any developer's life a lot easier.
But don't take my word for it ...