Well there is at least one AD Horde WPvP guild. It would be good if another one or two, and then 2 or 3 Alliance WPvP guilds on AD. Sounds like AD could be great for WPvP mainly because of the different sharding they wanted.
I was on AD with a test char once, thought I’d take a look in Goldshire - made the mistake of entering the inn. Holy moly. Will never go back lol.