AOE II was simple, and has nostalgia on its side. Unfortunately, it just became bland, and it hasn't aged well. Also, generally considered, Age of Mythology is the most highly regarded entry in the series, technically.
Problem is, the mechanics
aren't outdated. It's just that that's the style of RTS games, and if you change too much from that, they aren't RTS games - look at things like Dawn of War II, for example, which is advertised as an RTS game, but certainly barely qualifies as one.
edited 16th Nov '12 7:14:37 PM by Five_X