Transmogrification. That's the first and biggest thing Blizzard did that I thought they would never do, frankly. I not only never believed they'd do it, I didn't want them to do it. I argued against it. And now it's probably my favorite part of the game, bar none. It turns out I absolutely love playing dress up with orcs. And while transmog is my number one choice for this list, it is by far not the only surprise Blizzard has given me over the years.
So what else surprised me? What else did they do that I didn't see coming? To be honest, there are so many that narrowing it down to five is a bit hard for me. I never expected playable pandaren, for one thing. That's not going on the list, but it did surprise me. I'm going to do five aside from transmog, because I natter on about that one a lot.