Hello, and welcome to the Org!

1. The city has rebelled and due to the culture penalty and high amounts of unrest it has reveerted to its original faction. They may have a full stack of troops, but they are usually low-quality. I suggset exterminating the population once you re-capture it.

2.AFAIK there are no mods for the eras edition of rtw . However, Europa Barbarorum (EB) is going to have patch 0.8 soon, which will work with the version of RTW that comes in Eras.

3. I don't find Egypt paticularily fun to play. I just can't get past the grossly inaccurate way they are depicted inthe game. Nice chariot units, and for some reason they have the best archers in the game, but other than that, there's nothing really special or fun about them.