@Tuoni I have been Beta-testing MMOs since EverQuest in the 90s.
You put out some end-game stuff, near the end of the Beta-test, but in the beginning, your still balancing the early game stuff. The real meat of End-game stuff is in the planned Expansions, however, once they see how the public takes to the game, and more importantly, how things are working in the beginning of the game's lifecycle.