Robes.

[Deleted]

I always enjoy wearing robes, makes me feel more caster like, ohh wait i am a caster.....

[Myrandron]

Oh if only Blizz would add some sort of magical way to change the look of your armor so it was how you liked it... Oh wait they did, just transmog it to something different if you don't like them.

[Flowcube]

Oh if only Blizz would add some sort of magical way to change the look of your armor so it was how you liked it... Oh wait they did, just transmog it to something different if you don't like them.

^ something like that

Something like a "switch" already exists for us shamans (maybe other classe too, I don't know).

T14 and T15:
Enhancement-Specc? Here you get the chest without the robe/kilt/skirt thing
Elemental or Restoration-Specc? Here you get the chest with the robe/kilt/skirt thing

So why we can't decide on our own whether we want a robe or not?