Iron Golem Mechanics

This idea is where if you make your own iron golems, you can set them to guard a certain area and walk around the perimeter or stand still, you can get them to guard your house, a village, or a custom town you made, you could also get them to guard the nether where you go often. 

My next idea for this is to make it where they will attack certain things you want. Let's say you want it to kill all the pigs it sees temporarily, you could set it to attack them for the moment, then later, come back, take it off, and collect pork chops they may have dropped that haven't despawned yet. Or, you could set them to attack other players in the world with you as well. You could also combine this with the first idea and get them to guard your house against any players who might like to sneak in and take something while you were off on an adventure.

Next is to add a chest to them, this works in the same way as putting chests on donkeys, you can only put them on golems you created.

My fourth idea is being able to get them to follow and protect you if you created them and would want them to do that.

Lastly, if a player created them and they were to die in some way, it would read out...

"(Player name)'s Iron Golem (Way they died)"

For example...

"Steve's Iron Golem tried to swim in lava"

Or if the iron golem had a name...

"Steve's Iron Golem, Dinnerbone, was slain by Alex"