I thinked a lot about this proposition, and finally i think that:
1- It is a Decent one and i have not find any relevant technical objection against.
2- It's problem will be both social & political

So, i suggest you to make a proof of concept of it by implementing it on some testnet, ppl who embrace it can help by putting some bounty to hack it. benefits will be:
1- objectivity on the proof of work.
2- If the political resistence is umbeatable and the social insensitive is not motivated, you will have be allready done a half-step to it's productivity implementation on a new blockchain.

As you may agree, a political resistence is not something that can be forced by any rational/objective argumentation alone.

Thank you for sharing and i really valuate this work, please do not give up by a "BTC or nothing" reasoning, it deserve better horizons.

Wish you the best, i definitely will think more about it and will be glad to share any future thoughts.