Right now, she has more than a couple of areas that need significant improvement.
I may be totally wrong in my perceptions of her skills, but I don't see it at this time.
Some of the big Eastern Europeans also have power, but have some of the same areas of deficiency....mostly in the areas of quickness and agility.
We'll see if any of them can fix them, or if Keys does it first. I don't see her winning a major until she makes some significant improvement, or some of the big guns fall off, as Serena almost surely will.