This is a nice list.
One problem alluded to is crypto based subscriptions. AFAIK there is not such service currently in existence. A lot if possible if reasonably efficient montly crypto (preferably privacy coin) have support.
Another very large need is no-KYC privacy coin freelance and contract houses. I have been very surprised a long time now this obvious need is not met, especially for online only occupations like software development. There would needs be some escrow system and dispute resolution to make it work. Why this doesn’t exist on at least the dark web puzzles me. We need such things to get traceless monies into more hands without messing with exchanges.
As a dev myself I would be happy to help build needed software infrastructure.