^^How about something as simple as this; it would be regulated but can't be controlled? I mean you can still check people on what they spend the money on and so forth, money could be and should be followed and that's fine, however governments won't be able to control bitcoin, they wouldn't be able to rollback, they won't be printing more, they wouldn't be taking taxes and using it to enrich their friends, they wouldn't be able to buy 1000 dollar per chair or something to use the taxes. Bitcoin will be free, the people who are using bitcoin won't be.
I am not against the fiat world because it is traced and all, that is fine and understandable, I am against it because governments use fiat to make themselves richer while poor people are still poor and they can just print money and make us even poorer while giving that printed money to their bribers.
I like the "regulated but can't be controlled" part! It it very possible with well decentralized cryptocurrency. People from current national governments could even be part of the governance of well decentralized cryptocurrency without centralizing or controlling the coin/system in anyway. A well built decentralized system would require merit and fairness(in anonymous and randomize model) for proper governance.
If government officials provide the best skilled people for the coin governance, a fair & foolproof system will definitely picked them fairly. They won't be picked based on privileges or for being government officials. Regular people will be picked by the system if they have the best skills. The good thing about this model is that it will be hard to bribe or break rules/laws without getting caught and punished