Really interesting and short video, straight to the point and informed take on the issue. Keep the great work coming!
I personally think XRB (or alikes) are the future, as they take away the "miner" in the Chain, using the Tangled technology. The coin slowed down in speed recently, but went so high around Christmas, when other coins were crashing.
I do believe XRB is one of the closest looks on the future of Crypto-Currencies and day-to-day spendings, where blockchain wouldn't work due to transaction time and cost.