Earlier quoted context omitted.
Tightly coupling identity to cryptosystems should be entirely dismissed for anything that is supposed to have broad adoption. First off, these systems always require indefinitely-lived secrets. To rotate keys (or the whole cryptosystem—think future possible quantum computers) is to change identity. Therefore, to change keys is to break the previous identity. Anything that requires users to think about long-term secre…
We need more and more varied DNS zones so there's competition between them. And not gTLDs which are just extensions of .us, but zones with genuinely independent administration.
And greater zone diversity like you say too. Kinda related to that, something like increased pinning of non-root DNSSEC keys so that the root isn't so all-powerful.