They could one day, but “would”? I don’t think so. First, Jewish and Arab population growth rates are moving closer together, and in a decade or so the Jewish population growth rate will outstrip the Arabs’, which has been greatly exaggerated by the PA and leftists. Second, the Jordan valley is only one part of Judah and Samaria. Third, we should invite them to become citizens and participate, as has already been done in Jerusalem since 1967. This actually deters them from doing so, as a matter of Arab pride and what will the neighbors think. Jerusalem has had an upsurge in Arabs applying for Israeli citizenship, because they do not want to be a part of a Palestinian state misruled by the usual gang of thieves.
It suggests that Israel might also pursue a "one-nation solution".
Could this be a negotiation chip in the current talks?
Could it be designed to express Israel's independence from America's misguided policies? And might it flush Obama's Muslim sympathies out of the weeds and into the open?
Moreover, might it be designed to force Arab countries to choose sides -- in hat might be a totally unexpected pattern? The act will certainly raise Iran's hackles. But are there any Arab countries in the neighborhood who will pay more than lip service to the Palestinians.
It strikes me that, under the current circumstances, the environment strongly favors an aggressive Israeli policy toward Palestine.