maybe this will help reduce the lag a bit in skyblock. make mobs only spawn with spawners and also stacked. this will probably reduce the lag a bit. if you do this, you will need to put all spawners available for the players in /shop. Now, about villagers. if there are 10 players on 1 island, they will get 100 villagers right. ( correct me if i'm wrong ) So , introduce villager spawner and iron golem spawner ( same way as above : stacked ) Why villager spawner , well, players will still get the advantage of trades but with less villagers on a island. villager spawner will not be stacked but limited in spawn like 2 or 3 a the time and will despawn after some time or when they reach the limit you want. ex. : max villagers on a island is 5 so when new ones are spawning others will despawn. for the iron gollem spawner : also limited or make it spawn ( same spawn time like an ironfarm with 20 villagers) Those are just a few ideas, i can be wrong about the lag but won't cost you anything to try this out