At least one person understood the argument. Glad to have you here, unknown French person!
Point is, was and still remains, the Egyptian's are far too strong.
Their unit composition is top tier.
Their unique building is top tier
And their hero bonus is in a category on its own.
You really need to turn off the hero bonus and increase the cost of the special Egyptian building significantly. Twice the cost of the HM seems reasonable. That way you can still afford low level in some villages to get at least a small bonus and in the capital you need to calculate to which level it makes sense and not just always build it to lvl 20.