It's argued that the cataclysm old world revamp was responsible for limiting the development time of actual end game content in Cataclysm. And now blizzard might be repeating this same mistake because it will net them huge revenue when people use Blizzstore services to change character models to new races.
Unless you're an avid RP'er or WoW video creator what purpose do these new Skins/models really serve. You will still be hiding them under a layer of armor. Think of all the extra content that the art team could actually develop for the game. (More 5 mans, more challenge mode Armor, More mounts NOT SOLD ON BLIZZSTORE.) These model are fine as long as they do not take away from actual development time for user interacted content.
You guys are seriously making way to big a deal over updated models that will be covered in the long run and will become an after thought. And the more you harp on pointless content like updated character models you will be left in the dust when blizzard becomes lazy as you demand less ACTUAL GAME content.
Just remember every new skin/model is hours of work that could have been used else where. Or you can continue to spend 20$ on mounts that have more care and detail put into them then anything they release in the actual game.
The wow community as a whole is starting to let this company rot by expecting less and that's exactly what they are delivering.
Enjoy running around the next shrine equivalent naked as you have nothing to do... BUT MAN THOSE MODELS LOOK AWESOME WITHOUT GEAR!!!