The new implementation will consist of a central registry in
ProjectState instances where all the related fields would be registered for all apps. Then significant changes in
ProjectState, Schema Editor, and
Operations' subclasses would be made in order to make all of them adapt ModelStates in spite of fake rendered models in a backward-compatible way. Then the new method mapping in
ProjectState for all Operation subclasses'
state_backwards would be introduced.
And after all this, the traditional
__fake__ model implementation would now be replaced with new