It's always hard to judge what to write next, unless of course I am totally on a roll, as recently happened with the last two chapters of Niki and Max.
Since there seems to be limited feedback - just the nature of things I guess, the closest I can get to is looking at how many of each story are in people's library. Based on that, it looks like Robin is way more popular than I thought, though, there are passionate Max fans, and one very ardent fan of the Games adventures -- and yet another begging to find out more about Bree and Katie.
My point - barring some sort of voting being added to this, I will primarily - write what is inspiring me, or, if ambivalent, what I am getting the most feedback/library pics for.
Enjoy. Note, I have varied interests, completely new type of story posted today - Mystique.