Navigation Component
It would be great if we could wrap UINavigationController in an Navigator(Navigation Component). Not sure how what the api would be.
I'm really curious to see how React Native does this.
I've (obviously) been pretty Mac-centric where I think something like this is less necessary. But on iOS it'd be really nice.
Pulled from the example in http://techjaw.com/2015/02/23/pre-release-react-native-talk-at-facebooks-london-office-react-js-user-group/:

Oh, it's a bit like how UINavigationController works normally. The only problem is that we don't have something like props, this is also very hard to implement right because of types. Do you have a suggestion about how we can give our sub components access to the navigator?
No great ideas at the moment. A protocol could suffice though it puts the work on the user.
Maybe a approach similar to Functional view controllers from @chriseidhof is a good match with Few.