Excellent, thank you for the great feedback and questions @cryptogee. They make us want to write addenda or a part 2 right away. The classifications will surely unfold over time as there is no way we can keep calling 1300+ cryptocurrencies "currencies" when they perform vastly different operations, capture wildly different forms of value, and overall defy any form of stable medium. As for the best actual digital currency, I agree with you - who knows? Most financially oriented cryptos have promoted their "security" and "transferability" but maybe the way we exchange coin will be vastly different in the years to come. Most cryptos have diverged greatly from just being a digital monetary value and we expect their nature to evolve even more in the near future.

Lots to think about!