I kind of like how they are dripping out content slowly as opposed to having it all at once. It's kept the game fresh and has made content feel like an event.
I know that sounds like defending a bad practice. But just the entire way they roll content out within the world, I've really like it *shrugs*
I agree I've been liking it as well, Team Fortress 2 started much the same way and it's cool cause i don't play a huge amount, but there always feel like something new everytime i come back. Although I probably only play maybe an hour or 2 every 3 days or so. I'm not a big MP person and very few pull me in and get me playing alot.