As updated Xamarin.Bindings library for AppCompat/Design library/Support libraries pops out it has raised big problem:
Xamarin.Bindings should be opensourced (that's not a rocket science, you guys don't own libraries rights too). It would also fill gap in lack of advanced examples in building Bindings Libraries.
If that's not possible - you should fix your build process then. Libraries that depend on library X (let say support library) should be automatically rebuild and packaged for nuget.