Egypt will use Hamas to attack Israel. They probably will hand Hamas the whole Sinai Desert to perpetrate terror. Hamas will get arms freely from the Sinai. Which means Israel will eventually have to perform "cast lead 2". Better in this case to lift the Israeli blockade on Gaza altogether, as it will have no effect anyway. Close the Israel-Gaza border, and let them start working in Egypt. If military in Egypt are so fond of Hamas let them enjoy it.
PLO official: Reports about Abbas' resignation from political life very premature (Haaretz)
from the article: Egypt considers easing Gaza blockade, says diplomat