The problem is such an approach unfortunately does not work with changes to one of the largest programming languages on the planet, especially one that moves as

The problem is such an approach unfortunately does not work with changes to one of the largest programming languages on the planet, especially one that moves as slow as Java. Jigsaw cannot afford to be pushed out half-baked, Java has long prided itself on backwards compatibility and right now we're looking at a Python 2/3 split that will do serious harm to the ecosystem.