If they want to include Egypt in any real way they do need to include more of Africa. Egypt would not have achieved the power and glory it did without Nubia.

Especially Nubian gold, and the quarries south of Giza and Saqqara. At that point in time this was a place of turmoil for them with Egyptian power waning and Nubian power waxing.

If a player wants to assert Egypt as a power again, he would have to first repacify the regions south.

I'm all for a larger Strat map but I don't see an indication it scrolls.

I'll hope.