Probably the time to make a community-owned PPS pool will come soon, I always thought it would be to fight decentralization but it seems to be now needed to protect privacy, an anonymous PPS pool would be an interesting idea, something like the old p2pool with a smart contract of users funds that acts as a pool fund to distribute rewards to miners where the people who provide liquidity get paid some %.
Couldn't pools in less restrictive locations just take over? Do we really have the risk of them all becoming KYC mandatory?
It's conceivable that some medium-ranking pools like EMCD for example could benefit from an influx of miners deserting the KYC-pools. I imagine that there must be people somewhere taking advantage of convenient local regulations, t least I hope that'll still be possible in a few years' time...
In any case, I agree with your idea of a p2pool with a smart contract guarantor, I think we're running out of privacy-friendly solutions. The same goes for hashrate renting, I think it would be a good idea to develop a P2P hashrate rental service with a price per share submitted.