Mixer App, Logging In, and Sub Badge/Emote Sizes
Make the app more suitable for everyone. The app right now is not convenient at all. Also, let people sign in with their Twitter, or Google account, as not everyone wants to make a Microsoft account to watch their favourite streamers. Thats a reason why Ninja has lost so many viewers, as it is a whole lot easier to sign in with their Google account, etc. Lastly, make the sub badges and emotes bigger. Right now, you can barely see the sub badges and emotes, as they are very tiny.