They know that. They are aware of these two subjects and things didn't progress much for a total overhaul. What is best for them, in my opinion, is that they should let go of events of any kind for more than couple of months focusing over the entire game elements and do the necessary changes. In order for people to not get bored and them loosing money, they should bring back all items of any kind, that require donuts spent. Afterwards, people will farm or use real money do buy those premium items.
If things will go like this, growing event after event without doing any necessary work, it will have the appeal of a abandoned game.
