Mob Ranks

Minecraft mobs feel really boring and Recently I thought about a way to possibly fix it by adding Mob Ranks. Lvl 1: Mob Variants that pose little to no threat towards the player Lvl 2: Mob Variants that pose Minimal threat towards the player. Lvl 3: Mob Variants that pose normal amount of threat towards the player Lvl 4: Mob Variants that pose a massive threat towards the player. I personally feel this would add to the already boring system that Minecraft mobs follow and would spice up player Vs CPU combat. Furthermore, seeing mobs at higher ranks could be indicated in really unique ways e.g. A lvl 3 creeper could be the classic green but a lvl 4 creeper could be a more Reddish Green colour. Or more humanoid mobs could wear different armours depending on rank with lvl 1's wearing no armour at all.