Official React support - woohoo! I've been using React and Meteor together to build a desktop web app for quantified self, and I have to say, the combination is magnificent for productivity. The app is 90% JS and a little CSS, and reactively updates with no extra code. MongoDB and server logic is separated from the client-side view rendering, so if I wanted to make it a thin client and remotely host the computations on another server it would be a piece of cake.
An example file of code for the records overview (dashboard was a bit tabby-spacey): https://github.com/liamzebedee/metric/blob/master/client/fea...