There is a far bigger problem than what you have highlighted: People are building so many crazy-idea apps on top of a fundamental nostr layer which still has problems and still needs breaking changes. And now that they have, if we break those fundamentals everybody's houses of cards fall down. And so IMHO all the rapid adoption is the thing that will probably kill nostr. Far too much built on top of a still flimsy foundation that is now unable to be fixed. I wrestle with this dilemma in my dreams at night, tossing and turning, considering all the ways to make subkeys happen and how every single one breaks something deeply, etc.

The issues in your OP are smallish bug/features that can very easily be solved by comparison. Amethyst can become less complicated (by automating things or something I dunno), and can add ability to tag somebody, and primal can add ability to block somebody. These are stupid simple problems that just haven't happened yet. I think your expectations of how things should already be are very high.