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If talking about changing Bitcoin POW, then you are debating the impossible. Changing it will break the very structure that’s making the whole system stick together. It’s a pointless debate. Satoshi’s breakthrough is actually his implementation of POW in Bitcoin.
Bitcoin was built around the idea of a decentralized currency, not around the idea of wasting as much electricity as possible to secure a transaction worth one USD. Bitcoin is no longer decentralized because of ASICs and mining pools. TangentC is right, Satoshi's vision is one-CPU-one-vote and POS is perfectly aligned with that vision. And you're also right, that's a pointless debate.
@TangentC,
I think it will take sometime before I understand how ADA works...