It’s an interesting thought, with some interesting aspects that add up to a certain logic about it.
Asia could well be the vanguard for a new gold standard because of
internal dynamics. China is exemplary in this regard in that Chinese
citizens regularly save as much as 40% of their personal income. This
is in large part due to the lack of a safety net in China. There is no
Social Security, no guaranteed medical care, no pension benefits and so
on. Many of China’s less-connected citizens seem as likely to bury
their wealth in a shoebox as put it in a bank. This mindset strongly
favors a physical, storable asset, like gold.
Bring it on. You can already buy gold, either physically or various financial instruments and funds. It would be a pretty simple matter to create a currency, units of which could be stored in an account. You could even then have a debit-card tied to the account, cleared through Visa or whomever, and then use it for purchases, the exchange to whichever currency you made your purchase in being effected at clearing. The result is that your monetary assets remain in gold up until a microsecond before you need to spend it on something else.
Of course, I can think of about ten reasons, all backed by state guns, fists, flowing robes & jails, how it’ll never come to pass, or you’ll be barred from participating, but that just serves to highlight the problem with a fiat monopoly currency.