As I mentioned, I also see the point of usability and that being an obstacle for the general public to use GRC. However, I am not sure wether solving this problem would increase the use of cryptocurrencies, since I don't see the need for several currencies to exist in parallel. Sure, there are Dollars, Swiss Francs, Euros and so on, but we only use one at a time. I don't use Euros ever in Switzerland and I don't think a lot of Americans pay in Swiss Francs frequently. The currencies have different fields of application so to speak. One is used to pay here, and the other one is used to pay at a different country.
I therefore think that cryptocurrencies need their own sector in the currency world and may not be able to compete with the traditional ones too soon.