Nice...
But Not as good as the first 3,
I play AOE a lot and have made quite a lot of complex scenarios, Anyway I think you chose a bad bit of the whole theme for this one and you did it in a way which did'n do it(or you) Justice.
So I give you a 9 because a)it's good-Ish
b)I love AOE
c)I'm not a noob