The copper golem would have been a cool mob to add to Minecraft but it got outvoted by the allay. Due to the caves and cliffs update being delayed and the last mob vote being rigged by Dream, Mojang should add the copper golem as well. This means having both the allay and the copper golem in the game not removing the allay. I think this would be very cool as the allay is very useful and cute, and the copper golem is cool and the way it turns into a statue is amazing too.