on the one hand, it may contribute to metagaming, having the names there. but if you're gonna metagame, why are you allied in the first place?unless a member in your guild isn't doing it right

at the same time, it may be helpful in some cases (but we have icq anyways, to know if ppl are available to help our guild with their allied chars)
if it becomes unavailable, i still think the guild master/head priest should see who's online from the other side