I liked the game because Blizzard took good care of the participants who made the game, as the game was well taken care of, there are no bugs in it, and Blizzard worked ENOUGH to keep the game well and polluted. Different than it is now, just dead and with events that are repeated every year.
It's predictable. I can sit down and play a few rounds after work. Knowing how long I'm committing my time. It's also fairly low stress since it's a bit more casual feeling. Especially if I play Random Heros.