Limited amounts of entities per plot

Wow, two posts in a day! I think it would be really helpful for there to be entity limits on mobs for each plot, even if it’s countable on a hand. I understand that lag is a widespread issue, and that villagers already exist, but I think mobs can sometimes really brighten up a build, such as an aquarium or farm. I also imagine that some mobs could be used for Redstone, due to unique AI, therefore proving more useful. I’m not sure whether it is feasible for there to be limits on mobs within plot areas, but even 2-3 could help the community find new ways to characterise their builds. Thanks for your time, Wisemadprofessor, Leader of the WisePire