From a data analytics and report perspective, I would like to see the "About the Data" section towards the top of the article as a preface to the data analysis. I wanted to know right away why default themes were ignored.

I like the approach and the "Enthusiasm" metric. I think it could be less subjective with a bit more explanation of the calculations and why they matter and how you come to the results. Like a Methods section.

Let's see a review of the best default themes next! Like a top ten countdown to the best one.