I remember when I first saw the Treeline demo, I was blown away. It seemed like a great framework for striking web services together to solve problems and build great products. Over the past year, I've become weary of any frameworks that sit on top of Node. I currently run gitignore.io and I've had problems using Kraken.js due to lack of updates to the framework or incompatible dependency maintenance. If I were to go back, I would probably just use straight Express and cut out all of the frameworks. They just seem to generate just enough buzz to be functionally interesting and then they fall apart which is a terrible foundation to base any project on.