I think we need multiple bitcoin style coins. The blockchain is the ultimate tool for many functions. Since it is foremsically stable with time and date stamps it would be useful for patent proof, contracts and other legal work. Recording births and deaths and marriages. People could keep their own records that the government currently keeps removing private contracts like marriage out of their hands. Courts could use them as proof if a dispute occurred. Land deeds, trust, etc. We could get rid of most lawyers and keep the government out of our personal businesses. There is so much more. We could reduce government record keeping of private records to zero.
I think we need multiple bitcoin style coins.