I think the major plus for the US now is that, in Donovan and Dempsey, they have two players that can reasonably have a team built around them. The danger is that they become a Gerrard-Lampard problem: too similar and end up cancelling each other out.
As el Symbols says, Klinsmann has two years to get it right. I'm still not convinced he's the right man but saying that, I don't know who I would've chosen instead. And at least he's now in a situation where he knows who his two best players are, which has to make any further team selections a lot more straightforward.