Yes you are correct it does need some sort of management or a centralized authority only to help those people getting abused by investment scams and somehow put a stop to this investment scams once and for all. If we could manage to eliminate this then maybe people and governments could consider it and accept it as their local currency.
investment fraud will not be stopped at any time. Investment scams will always be there but with a variety of new methods that will continue to emerge. What we have to do is how to prevent it from getting caught up in the investment fraud. making as a local currency also will not be fully happen, there will be some regulations governing its use and will not be fully the same as a valid local currency.