In the market economy, there is the drawback of inflation when you print money which can cause problems depending on the reaction of the market forces but is there such a thing on a command economy like the soviet union one?
Since you control everything then you can freely print money in order to hire more workers. You can pretty much pay everyone and allow them to trade within your borders which means none would die from hunger or be homeless. Of course you can't overdo it since they will lose the motivation to work but I can't think of any other drawback.
Your exports/imports wouldn't be affected either because if you have advanced products that everyone needs then none will deny their prices just because you print money endlessly for your people. They will give the amount of currency that you want. Your exchange rate would be the one you want.
Basically if the world was one and our currencies/countries didn't compete with each other, command economy model would be better wouldn't it?
Market economy makes you more competetive so its better in the current world but isn't it idiotic to continue like this?
Also, something tells me that some central banks are printing free money for their precious elite members. None would notice the difference.