Some of the Muslim banks avoid debt which is against their religious code by issuance of Palladium bars at set prices agreed between customer and bank. So its an agreement but without debt with profit for the bank in that agreement and of course the customer gains use of value they would not have otherwise.
So thats a kind of currency use without resort to FIAT leverage or legally relying on the status given by government. I'm sure its with the knowledge of government but not exactly a new currency, more of an old one
So we find just another 12 trillions and we could move on and find the money for the rest of the world.
The use of gold or any of these alternatives to the dollar debt system as actually currency and stored as reserve asset would monetise and change the price for BTC or gold or anything. It would all have to readjust, its hard to predict by saying the pricing now or even the supply, if gold is used more the supply will rise as certain deposits of gold become profitable to mine
So you just want to inflate their price disregarding it's a value? Imagine prices for electronics, medical and scientific equipment and so on when precious metals skyrocket. It will only increase the gap between rich and poor.