There is a reason why there are about 6+ general bishops (Anbas Boutros, Timothy, Youaness, Armia, Mina, Raphael and there might be others) in Cairo, and 2+ non-general bishops (Helwan, and Shoubra El-Kheima) in Cairo also, and none in Alexandria although the departed Pope did not visit Alexandria that much and resided in Cairo.
Historically, till Anba Youaness Ibn Senhout , Metropolitan of Cairo in the 12th century, there was always metropolitan for Cairo. It was Pope Gabriel Ibn Turek who annexed it to his diocese(s).
If the new Pope is a monk, I hope they give Anba Raphael extended authority over all Cairo and distribute the rest of the general bishops among other vacant dioceses as a concession but a step towards sound Orthodox hierarchy and repairing the damage done during the last Papacy. That would be ideal.