So it's
Bring the class, spec, legendary and player... Or enjoy the bench. Someone on the EU Alpha forums suggested it's not a problem because you can simply divide your artifact power between 2-3 artifacts to take advantage of the cheaper first points cost... I don't see how that doesn't just make things worse, then you have 2 mildly useless specs instead of one potential weak spec and another absolutely useless one.
For arms, every bit artifact power that is not going towards shattered defenses/corrupted blood is a tragedy.