I agree, there are several major bug within smart contract which causes big loss (such as Parity Wallet vulnerability which lock at least half million ETH). But in the end, ETH community decline to reverse the damage.
But i expect newer cryptocurrency which controlled by few company/group wiull have built-in protocol to reverse transaction easily.
The current legacy banking system we have could already be used for that. Plus I believe it shouldn’t be called A “cryptocurrency”, or even considered to be a “version” of one. “Cryptocurrency” has a cypherpunk origin to it, and from what we learned from Bitcoin, what you are talking about is merely like “database rewards” from a technological standpoint.