I think the events are okay. They give players an extra incentive to play. The events do get a little bit repetitive with the similarity though - run a dungeon to the ground for its chest with skins. Their updates, on the other hand, are excellent. Much better than that one time Kabam updated a candelabra and disappeared for several months.
If you are maxing a character 8/8, would you rather merch your way to this goal or would you max it by hand? Why?