Here's an idea, make a smelt villager! By that I mean, if you have Gold/Iron/Chain Metal items, make them able to trade it for iron and gold! Make Chain Metal armour give you -3 ingots of iron, and Iron -1 ingots! Also, for gold make it the same amount, but make them gold nuggets. I hope this gave you some-what a good idea, I can see some problems with it later on but I hope you guys can get an idea from seeing this! (if you do put it in, just a simple "thanks" would be great! )

 

No Support. The Skeleton grinders would become overcrowded and the Price for Iron and Gold would drop to nothing over time. It's not like Gold an iron are particulary expensive These days...

 

No support, I agree with what Frederic said.

 

This is confusing. No support.

 

What @Fredric said

 

OMG Full Support When are u Getting Admin?

 

No support, Frederic explained it perfectly.