Anyway back to Egypt, I think if Nasser were to lead a civ he would make more sense as an alternate leader of Arabia, considering he was a big proponent of Pan-Arabism movement.
Well, no. Even if Egypt is the most prominent figure of the Arab World, it would be very wrong to put him as an alternate leader of Arabia. I mean, Nasser is at the origin of the Arab Cold War against Arabia
(even if I like more Nasser and its secular, pan-Arab nationialism views than King Faisal pro-islamism stance).
Nasser as an alternate leader of Arabia makes as much sense as him being an alternate leader of the Ottoman Empire.
Pan-Arabism is a "myth". Even if almost every Arab population
(except maybe Maghreb) backed the plan for a pan-Arabism Union, every Arab countries in the region would be in at the sole condition to be the one to lead it. If they really wanted it, they could do a federal system à la United States, something that never came up to the table of negotiation. The countries in the Arab League are very far from as closely linked together than those in the Europe Union.
The only time a some sort of Pan-Arabism union was created was the Egypt-Syria Union under Egypt rule. To be fair, Syria would end up to be a colony of the far-more developed Egypt. Many Syrians at the time started to think if being a french colony would not be better for them than that, so they left the union 3 years later
(well, communism and cold war might have contributed to that desunion...).
Irak-Jordan was in project. We could argue if this project could have resulted to anything at all since both country wanted to lead that union. Then the King of Irak was
no more, and so the perspective of that union.
Then Gaddafi wanted to created a super-Union with Libya, Egypt, Sudan and Syria. But once again, this leads nowhere because they all wanted to be in charge.