You should have told your guildmates to check out Amazon Basin, which is fairly large in spite of having no representation requirements. (Any server welcome in spite of the post, you can easily guest now too.) Feel free to show up for the large events, then flip back to repping your small guild for the cozy chat.
Good luck on the small cozy guild part though. :p Personally I've just been using friends list and ad-hoc parties across zones for the same effect.
Good luck on the small cozy guild part though. :p Personally I've just been using friends list and ad-hoc parties across zones for the same effect.