The expansion changed the game entirely, it's so much better. I bought into vanilla played for a month and then quit because of the whole auction house thing. I had something like 12 hours max on vanilla but now I have over 500 hours on RoS. Next patch is bringing in a better version of the horadric cube, able to extract the passives from legendaries and apply up to three of them to you (a weapon, jewelry, and armor slot). Super stoked for it.