Now Guild Quest System provide the Global Quest for Guild with certain number players have to complete their own quest.
Everyone can see active player have to wait if there're not enough member complete the quest day by day.

So I suggest new Guild Quest system:
The Global quest count the number of members who have completed their own quest for 24h.
After the time is up. The reward guild coins base on how many member complete the global quest.
Then new guild quest will arrive.