Are you sure of that? There is an almost finished call for algorithms right now from NIST, because RSA and elliptic curve are known to be broken by quantum cryptography.

While you might not personally believe this to be true, it's not a good design decision to enforce upon the entire world a concept of identity that many security professionals will tell you is broken at scale.

This doesn't even address key management issues such rotation, theft, loss, planting, etc.