SkyBlock mob spawning increased by over 4x!
Mob spawning range from player increased from 3 -> 4
Mob spawns increased from every 20 ticks (1 second) server wide -> 5 ticks (0.25 second) server wide.
Mob spawn limits increased from 24 -> 70. (This is a very difficult value to explain when it comes to how exactly it works - refer to https://bukkit.gamepedia.com/Bukkit.yml#monsters)