Which the best feature in Patch 6.1 ?

Well the new Patch 6.1 is finally live and we are very happy to taste from the new content. Today I was hanging out in Draenor and I was wondering which one of the new features I like the most.

The I've decided that this is one very good question for my blog poll. And that's why I'm asking you this question - Which 6.1 feature do you like the most ?

Vote in the poll the left for one of the features that I've put or write me your answer in the comments below ( I'll put it as an additional answer in the poll).

Vote for:

- the new Blood Elf Models;

- theTwitter Integration;

- changes with Heirloom Collections;

- the Jukebox;

- the selfie tool  S.E.L.F.I.E. Camera.