Going back to a gold standard will limit the money supply. This means that there will be less capital for building $thing. A gold standard means that when the economy gets overheated it pops, then contracts and you get deflation. This makes crashes last longer and harder. It requires greater fiscal discipline to overcome. The problem with the USA "empire" is that for a trading empire to work you need a plan, and stic…
If you are trying to pin a currency to a standard, gold isn't great. Its value is almost entirely speculative and it lacks meaninful intrinsic value at this point. If you demand to leave fiat currency, an aluminum or steel standard might make more sense. Rare earth metals, or even just petroleum would be my proposal. Maybe someday we will have a duterium pinned currency.
I don't think that there is a fixed asset that could be suitable as a proper peg.