So yes, Google Play has let you rotate your key for a few years now, but a) Riot/Android was set up before that was a thing, b) It gives Google the ability to push their own updates to your app, which some of the more paranoid users might object to. So we set it back up with our own key again this time, but this time will protect it with our lives...

Edit: https://developer.android.com/studio/publish/app-signing#app... is the type of key rotation i was talking about here.