That's why the devs are suggesting to release the newer and repeatedly playable contents earlier than it's planned.
because we all know it's very very hard to make players back once they've left.
We're afraid that players will soon complete all of the quests soon like 2-3 days and they could leave the server even before we release Aramitama or Oomagabarai.
We believe that, releasing newer contents have more chances to make players stay with Onigiri than slowing down the update...