Rowdy, it turns the world easier in other ways like increasing the resource availability and so reducing stuff prices. This will push even more the game into creative mode. Italy however gave some insight on mcmmo that point it could be balanced.

Also it may change the pvp game. I don't pvp here so i will not speak of this.

Can any mods give us an update on whether or not this will be implemented?

I am currently in the process of building a multilayered arena with various stages. And due to the strong influence that mcmmo would have on pvp, I cannot decide on which sorts of stages to make because I am unsure about the sort of pvp system we will be using.