Sometimes you just have to embrace the holiday spirit. That's what Blizzard is doing, by announcing that it's time for all the good girls and boys of Azeroth and Draenor to get their letters to Greatfather Winter. What do you want for this year's Winter Veil? Well, whatever it is, asking can't hurt, so go ahead and comment on the official post, or here on the forums. There's even a thread here on the RP forums, if you're so inclined.
I personally think transmog was the gift that keeps on giving for me, but if there's something you want, get on board.