Well. I doubt I changed their decision but in Blizzard’s most recent post they announced lifting the restriction of factions on PvP realms. Thanks Blizz!
To maintain healthy populations for Burning Crusade Classic realms, we’ve regularly reviewed realm populations and offered Free Character Transfers from realms that dropped to a low population. Additionally, we’ve made the decision to retire some Burning Crusade Classic realms and consolidate their remaining players onto other realms that have higher populations.