problem with Egyptian Huge Cities

[Proletariat]

1. I will try destroying the cultural buildings as advised
2. I will hand over pesky cities to the Egyptians then march back in after exterminating the population
3. I will have good governers to hand and watch the grain situation

If you don't think 2 is cheating, don't bother with 1 or 3. They're unecessary if you're putting the people to the sword left and right.

[Darius]

Well they wont revolt back to the Egyptians if you eliminate the Egyptian Faction. Then they just go rebel. Should you eliminate them all the way to 400 people and have a nice sized army and a general with a decent sized influence rating, they should remain stable until the short period of unrest due to hostile occupation forces subsides.