Practically speaking I think it requires a lot of will, momentum, and process to change this. The decision even if made soon would probably take a few years to

Practically speaking I think it requires a lot of will, momentum, and process to change this. The decision even if made soon would probably take a few years to complete. Supplementing it may be faster (eg. adding Euro and/or Yuan) than outright replacing it, but it’s not my area of expertise. The timeframe was based on some light research.