The Widescreen advantage is significant. You are able to see more units and that's why you are able to see sneak attacks, raids and such very early and don't risk losing villagers as much as the guy with smaller resolution. Even though, I believe that for the sake of AoC-community, this mod should be allowed, because those who need it to enjoy aoc with their widescreens (otherwise it's really unpleasant experience to play) should have the ability to use them. This way we have more people playing aoc and some coming back along the widescreen support.