Let's now see how other UIs (like @esteemapp) shape things into this. It would be nice to see things being developed in a way where all developers would automatically get the "support" of the new features. Basically easing out the speed of change behind the scenes for their apps to support the just newly released features.

Something around the @openseed concept.

In another words, not just a library or group of them. But a framework, where when the app developer uses part of it, it basically using a format of code already implicit in the framework.

Sort of like the model of Apple developing for iOS.

Of course there are goods and bads about that approach. Freedom to improve will be reduced and constrained to the framework format, but speed of development and new apps will appear much faster.