I think Jurgen Klinsmann will be our next coach. He certainly won't want to continue commuting between California and Germany. If he leads the Germans to the Finals, his stock will be high enough that it would be a no-brainer for the US to offer him the job.
As a Tottenham supporter from 1968 naturally Klinsmann would be quite a coup for Team USA. Whether he would be better than Arena at coaching the talent level we have is by no means clear.
If Klinsi did lead Germany to the finals then why would he want to bother taking the USA job when realistically making the QF is about as much as one can reasonably expect?