I dont like the idea because GOLD has been centralized for hundreds of years and these cryptocurrencies are decentralized it contradicts to each other,isnt it?It would be nice if there are some other commodities that arent centralized like,price of the oil which are not being controlled by few countries or anything that arent being regulated by the government .
My friend, this is the advantage of the crypto currency - this is not regulated by the government! Therefore, no such bindings to resources are needed.