Blizzard sent me an e-mail offering me 7 free days and i gladly took the opportunity to see the new stuff. 7 days is not that much to fully experience what WoW has to offer but eh, i got to see what i wanted.
I enjoyed the ally quests in the Southern Barrens, specifically the place where the "evil jungle" appeared. Deathwing also appeared there and killed me and set the whole place ablaze, 'twas pretty cool.
Not something i can say about the rest of the new-old world content, most quest hubs hold about 4 or so quests give or take that have similar patterns, one kill quest, one gather quest in the same location, one boss quest, and one gimmicky quest like transforming you into a tiger or air elemental or giving you gnome gadgets or similar stuff, that tries to break the pace. Then its report to captain whatever in the next quest hub...
Im thinking that they may have bitten more than they could chew with redoing the whole world. and i think it shows. Also, i leveled my druid alt from level 16 to 42 in FOUR days. Im not the person that likes grind and slow progress but this is just too much.