I think that we always will need to make the cryptocurrency community not necessarily bigger, but more educated.
After all, educated people and less new players in this game will mean that all type of scammers will have tougher task: It is not so easy to steal the money from the person who knows how to protect about such an activity. Also, in many countries we surely need some type of campaining which may educate the mainstream communities about the real pros and cons of using cryptocurrencies: not only goverment propaganda that surrounds us everywhere.