Elysium Project Nighthaven realm has been live for two months. A stable online player population (3,500 - 5,500), and a near even faction balance between the Alliance and Horde, have made it the place to play Vanilla World of Warcraft.
"Floating above the Plaguelands, the necropolis known as Naxxramas serves as the seat of one of the Lich King's most powerful officers, the dreaded lich Kel'Thuzad. Horrors of the past and new terrors yet to be unleashed are gathering inside the necropolis as the Lich King's servants prepare their assault. The Scourge marches again..."