TL;DR: Increase the time for the next Conquest and bring Ninja Event back.
The time for the next Ninja Event is very high, is the event where we win a great part of our pearls, without an event like that the Blacksmith Event becomes useless, then it needs to be more recurrent.
You put something that most of us do not like as recurring (Conquest) and a good thing for the players (Ninja Event) as non-recurring. That is bad for us, it’s a bad distribution the way you did it. Forcing the Conquest on us will not cause us to love it, it’s totally the opposite.