I'm so sorry for the delay in responding to this. We were extra-thorough in your evaluation this time around.
We agreed with your community assessment of the sample questions. The selection this time also seemed to be a better representation of your site overall. Looking at the front page of this site, there are a number of good questions at front and center, and your community has been much improved about closing or salvaging cruft. Furthermore, the latest crop of questions on your front page are exactly what we like to see: specific, long-tailed, and researched.
Some of us on the team are still concerned by how "drive-by" a lot of your users are. However, you all seem well aware of that (and of why that's the case) and are able to work with that.
Your traffic has been moving really nicely up and to the right. You've shown excellent growth for a solid year now, and your userbase and question quality is reflective of that.
tl;dr -- Congratulations, we're putting you in the queue for graduation!