It would be good to get Firebase's Angular bindings to work decently well for top-level objects and improve their promise support. I recently worked on http://worldmap.io as a way to test a bunch of angular-related tech and the firebase bindings, while dead easy to start, were a pain as I couldn't resolve them in the routeProvider. Instead I had to do it inside the controller, which forced me to keep a bunch of boilerplate. See https://github.com/alexandrosm/worldmap/blob/master/app/scri...

Still, a great project and concept, just has some more way to go before I'd use it in a real project. I do want to check out https://github.com/marknutter/firebase-resource though, made by a fellow HNer and mentioned last time around.