Would such a mod push Minecraft more into a none universally consistent game? Every world still follows the same general flow of Minecraft where you mine, farm, and explore but there is a lot more variation.Yeah. I think universally consistency would be kind of a scale.
Where no universally consistency would be something like dreams, where there aren't really any rules whatsoever (barring controller types, and console hardware.) And on the other end, Minecraft would be closer to the other end of the spectrum. Where there's a definite set of rules that could be put together.
The mod would push it closer to being a non-universally consistent game. More consistent that LittleBigPlanet and Dreams, but less than original Minecraft I would say.