lightweight simple functioning ecosystems with food chain

I recently had an idea that I think would improve Minecraft's ecology and make the player think more about their actions! Currently if you put a predator like a fox with rabbits it'll hunt them to extinction. But what if the spawn rate of primary consumers like cows changed depending on vegetation & predator levels. Normally every ecosystem would be already perfect, the spawn rate of herbivores is equal to the rate predators hunt them, a single predator could eat 1 every 2 days. But the player can destroy these ecosystems by introducing non native animals not suitable to the ecosystem, overbreeding predators, overhunting or overharvesting plants which decreases the spawn rate of herbivores. But it's never too late to fix an ecosystem, by removing the threat nature will start to heal. It all depends on what the problem is and how to fix it. Predators should need 1 meal every 2 days to not starve, and herbivores need 2 patches of vegetation. There could also be an invisible domesticated tag, every offspring that was bred by a player should be domesticated, same with pets. These don't die of old age (despawning) nor of starvation, but the player can still care for them and be rewarded. For example you can help a baby grow faster if they have a water source and grass. And non domesticated animals could avoid the player unlike domesticated ones. I originally wanted the animals to reproduce by themselves but I thought it would be too laggy so the spawning system is better.