I think its important, but I am obviously biased. However its a milestone in the world because the world is much closer to the end now (because its decided when to end a world base on player owned villages a tribe controls).
In the interest of fairness, even though I agree, I'd like to ask a non-c2 member to contribute whether or not they think this is a milestone (especially as it seems pretty big). If no one offers sufficient reason to the contrary, it will be added.
With any luck, we might even get a debate going, putting some life in the forums. But more than likely we will get nothing.