I wish they would add more as well. I had to vender 5 tier sets just so i could have room for the mop stuff i got. They should have some way to remember what bits you have earned and then just let you pick them out of a list of unlocked gear to transmog with. Even if it would just work with teir sets it would save alot of space.
And i wish they would let us stack herbs and cloth in more then 20s. SOOOOOOOOO many green tea leaves lol.