I can't technically keep this here as it may be scenario design but it is not scenario design within AoM........
Eh, I will leave it to Shanks and DragonQ to decide, I dont think the HoV will give what you want, anyhow, until then, here shall be 'OT-ed'
But as for AoEO - well worth downloading. Fully moddable and great game to play - even in alpha. I haven't played since back when Celts were just added (Due to the fact my internet is terrible) but I would recommend this to play, it is, in my opinion, one of the all time RTS greats.
Also if you are looking for a HG forum, whether a small one on HG Main or your own heaven, I would support such an ask.