More Challenging Atmosphere

This is kind of a drastic change to the minecraft gameplay, so i understand that many might not really like the opinion of mine. so, i want to add 3 new difficulty options for minecaft: Very easy(easiest one but still above peaceful), Very hard (above hard) and the hardest of them, Extreme. in very easy mode, mobs deal lower damage than in easy difficulty, zombies deal half a heart against no armor player, for example. Or at least -%50 less damage for every mob dealt to the player. About the very hard mode, mobs will spawn with armor more often and their spawn rate is increased, multiplied %15 to %30 at least. but in extreme mode, here's my kinda insane idea. The same properties as the very hard difficulty, but including the mobs will be more intelligent. like, skeletons will move along with shooting the player, they will avoid hitting any mob that hunts down the player, even if it hits any mob by mistake the other mobs will not attack the skeleton back. they will be focused on the player only. also making it possible for mobs to spawn with shields and be able to use them at least when the player is close to them. or when the player intends to shoot the monster. also able to spawn with totem of undying (only if the mobs are close to an illager mansion) by 300 or 400 blocks. About the mobs in nether, making the piglin hordes more intelligent too will make minecraft more fun. PS the skeleton shooting range should be increased too, but the longer the range, lower chance to hit.