I'd really like them to polish Silvermoon up a bit, that place hasn't been touched since BC and with all the graphical upgrades WoW has gotten since then it's looking pretty old. It's probably my favorite major city out of all the Horde cities. I hope they do more with the other cities instead of having Orgrimmar be like the only useful major city. Undercity and Exodar are the same deal, they both just need a polish to make the textures look more detailed like Orgrimmar. They don't need any changes just make it more detailed like they did with Brill and the other Forsaken encampments. Not only those cities but pretty much every other city needs a makeover as well like Darnassus, Ironforge, and Thunder Bluff. It's really annoying how Blizzard just ignores every city but Orgrimmar and Stormwind.