I took the bait from a Blizz email about getting a free upgrade to WoD with a free 90 boost and a free 7 day pass (which is like offering up the table Tony Montana is sitting at in the end of "Scarface" to a once-junkie, but here we are); after the first day getting my Alliance toon up to 91, I was unimpressed - but, the Horde side (story-wise) had me right back in full on nostalgia mode with the whole storyline. I'm 92 on my Druid (bear) and I'm contemplating buying a time card.
Not sure how I feel about the garrison situation though. . .