I'm a Mixpanel customer and this is very interesting. Mixpanel suggests the main thing to do with this data is messaging the users that are likely to convert, but I'm more interested in finding out what are the indicators that makes someone likely to convert and optimizing for that.

This feature also supports my theory that analytics companies are really going to become broader marketing companies, so instead of focusing on just gathering and visualizing data, they will give you more ways of acting on that data.