Background notification handling
This feature is very important, and required for many types of applications. For example, our application has chat system. We are not able to show to receiver of notification specific screen with chat dialog after clicking received notification from status bar.
Support for firebase analytics
I know that work on integrating the full firebase sdk has been stopped but is there any way to have at least firebase analytics work? I think google analytics is supported but that is being deprecated in favour of firebase.
Reducing App Size
it will be great if there will be any options to help reducing app size because just simple app size take 24Mb and thats a lot
In App Purchases
Moved from: https://github.com/expo/expo/issues/11 Add support for in app purchases to standalone apps on iOS and Android in the managed workflow ------------------------------ Status as of November 7, 2019: This feature is definitely important for us in the medium to long-term but we need to build some more infrastructure before it's possible. We're currently rewriting our build service to make it capable of handling adding In-App Purchase support to apps but it's not there yet.
Add Mapbox GL support
Mapbox recently released it's React Native SDK(react-native-mapbox-gl), would be great to get this in Expo.
Similar to the API provided by https://github.com/Polidea/react-native-ble-plx I work on a bluetooth connected medical device and have been using that library to do most of the bluetooth stuff. However, you must detach the expo app to get it working and the setup is non-trivial. It would be nice to have a bluetooth API built into the expo SDK.
nfc integration would allow novel data transfer with many possible use cases in security, payments, social, games and interactive installations
Subtitles in <Video />
Allow users to add subtitles to video (.srt file/fetched from URI?). It would be really nice to add an ability to resync them (+ 5 seconds etc.)