From the day it was announced I said to myself I was gonna bring back T4. There's just something about being a voidwalker that speaks to me more as a lock than the impaled gnome skulls on T5 or wings from T6. As for weapons, being unable to transmog Tarecgosa is balls. >_<
Honestly though, I think I like T12 more than 4 now that I have it in purple... I might just keep that around. Why does T13 have to look so bad?