I was impressed with Bitcoin when I first heard about it. I was going to buy some until I realized that most of it's characteristics make it unsustainable. It has a limited supply, an unlimited blockchain size, a declining rate of production, and no means of recovering lost coins or preventing hoarding which is necessary when the supply is limited. It may be useful now but in the long run the scarcity will kill it. Dash sound amazing but the current incarnation of Dash is also unsustainable. Doesn't anybody realize why fiat is inflationary? Because that is what's required to support savings. The mere act of saving money removes it from circulation and inflation is necessary to replace it in order to maintain the velocity and liquidity of the market. Inflation also increases the value of business inventory. Deflation reduces the value of business inventory which is one of the reasons merchants are reluctant to accept deflationary cryptos. To be sustainable, a crypto needs to have the opposite set of characteristics of Bitcoin- an unlimited self-regulating supply, a limited blockchain size, a steady rate production, and a means for recovering lost coins. It also needs a way to manage inflation and deflation without effecting the values of accounts. Inflation is what should happen when the supply becomes concentrated in a small percentage of accounts. Deflation is what should happen when the supply becomes evenly distributed among the majority of accounts. One way to do this is to introduce a new variant of the same coin with a different color association and exchange rate. This would not be a hard fork because it's the same coin. An exchange rate less than one to one, such as two to one, would decrease the supply thereby facilitating deflation while an exchange rate greater than one to one, such as one to two, would increase the supply thereby facilitating inflation. As long as merchants understand the color and exchange rate, the prices of goods should change accordingly and the value of accounts will be preserved.