This new event is... strange. Only one stage, all the plot available without playing it. I can understand why but it's kinda sad. I liked 4 stages event. It's better to get just the right amount of currency. Like, I mainly do 10 stamina stages on phase 2 just for the missions rewards as I already cleared it most of the time. And it's not really new player friendly (even if I don't know if the game has that many new players actually).
Events seems to be more and more on the side even if they are the actual core of the game.