First of all, kudos for an amazing, amazing article! This is the stuff that should be much more popular, rather than a lot of bullshit that gets most of the traffic. Original insights, illuminating visualizations, easy language, yet challenges you to think harder. What more could one want? Keep it up! :D
Secondly, I feel that this last section has enough meat in it to warrant a whole article of its own. I would love to read more about other effects of dropout in depth.
Thanks for the article!