That reminds me of Hong Kong, where I used to live and which maintains a large sovereign wealth fund to ensure its currency is pegged to the US dollar.
While various US think tanks ranked it well on their checklists of "economic freedom", they tended to gloss over the rest of the recipe that made it work. Not just the huge sovereign wealth fund, but also how half the housing is government-run or subsidized and you don't really own land, you just rent it for a very long term from the government.