currently named mobs tend to stack together as-well as some mobs just dont stack pandas and turtles and tropical fish axolotls frog stack together and ignore types so if you have orange and white itl become one of the two for server performance passive mob path finding is usually the largest cause of passive lag in any server hence i suggest a limit set to each passive mob type (this is alot of work im sorry) and in /limits it would say what each limited mob is and how many u have on ur is out of max this would be variable, some mobs u could have more then others but also then this would allow the change so named mobs dont stack the point is so you can have a limit of 32 sheep for example 16 colors and then 16 to name or whatever ive seen on some islands on eco over 300 turtles, over 250 pandas, why? i have not a clue but i can imagine this takes a toll on the server, i understand there's variants for axolotls and tropical fish so having that limit higher then cows or sheep or pigs makes sense. aswell as this could also set a limit to bats or let us just turn those off in /settings cuz if u want bat spawns you are a unicorn and i dont think just having no bats possible is fair to you rare people who want bats and to live like Bruce Wane
I have suggested turning off bat spawns before because my island used to have around 200 bats that didn't stack