Mob spawning should be prevented in a certain radius around tamed mobs

Exactly what it sounds like. I just had a creeper spawn in my base, almost killing my Happy Ghasts, and frankly, there feels like there needs to be a spawning mechanic that prevents hostile mobs from spawning within a certain radius (16-32 blocks or so) away from said tamed mob. This would cause mobs like Happy Ghasts, Wolves, Cats, Parrots, Nautilus, Horses/Donkeys/Mules, Camels, and Llamas to prevent hostile mobs from spawning in an area, dedicating an area as the player's "base" based on tamed mobs. This would obviously need to be balanced for sake of not just using Ghasts to prevent cave spawns, but I digress.