Is it realistic/possible that the bitcoin core team make a new Bitcoin Improvement Proposal (BIP) on day in which they propose to change Proof of Work (POW) with something else (proof of stake for example)?
And yes, I know that POW was already part of "Satoshi Nakamoto's" paper Bitcoin: A Peer-to-Peer Electronic Cash System.
POW takes already more energy than smaller countries and it's proved that there are cheeper solutions (the existence of many alt-coins proves that).
Do you think, it's realistic? Maybe far in the future? Maybe without a hardfork?