Ideally we get some international cooperation and get an international clearing currency, and don't end up with the reserve currency being tied to a specific nation again.

The different blocs could already start experimenting with this: the Euro could be used for currency exchange within partner nations while bringing back national currencies, BRICS could setup their own currency for trade between themselves, etc.

These problems are not new, they were the same questions we had post WW2, and some good ideas from that era may have been squashed by the ruling power of the time (namely the US), but their merit remains.

http://www.sofer.com/blog/keynes-on-the-balance-of-trade.htm...

https://www.weforum.org/stories/economic-growth/yanis-varouf...