First of all, 2 of them were really small maps, and there really weren't a lot of resources. The second thing is that they could've used a lot more eye candy or just some more space. And there are a few trigger effects that you might want to look at, GaiatheTree:
One is PlayNextMusicTrack, which continuously plays whatever music is for your civilization.
Another is for Arkantos dying, although I'm not sure you if you wanted him to disappear or just be normal, because the other heroes did disappear when they died. If you want Arkantos to disappear when he gets killed, then this is the trigger:
Is Dead (the unit is arkantos)
and the effect is Change Unit Type (Change arkantos to a cinematic block or something)
Also, Cinematic Mode, which makes your camera track into a cinematic.
I hope my review is helpful and that you aren't offended by it! Although I did think that you actually going through to make player 2 actually play supremacy was pretty cool ^_^ I don't have the patience for that :O
See you on AoM!