I'm about to implement it on my Pi today, and have recently played with it on Windows. Not only did it impress me a lot, but also introduced me to PostgreSql, which also impresses me a lot. One of the things I really liked were the really informative, automatically activated, error pages. Like books vs wet paint compared to the Yellow Screen of Death, turned on for dev. I should really try develop a dev error page with 1/100th of the info the Django one gives. And, Jade looks like it has some potential as a view engine.
Follow my adventures with .NET Core at my new blog, Erisia Information Services.