I care about transmog for my 2 main characters. I usually alternate between the T2, T8, T10 and T11 sets on both my paladin and my druid. Also, I've got tons and tons of random sets I've gathered since vanilla. Old weapons that can't be gotten anymore, random cloaks and helms... shit like that. Hell, I collected sets to wear around Stormwind before transmog was ever even thought up.