I would like if they would continue the Neptulon story wich would probably include Azshara and the old god at the bottom of the ocean. They really are suckers for dumping it, i mean they did a fine job of releasing daily quest hubs and raids in tbc and multiple times too (Ogri'la/Skyguards, Netherwing, Sunwell), they only did it once in wotlk (Argent tournament).... i guess they're spreading their resources too thin with developing like 4 games at once