signature abstraction

was thinking it might be possible to create a protocol for signatures where some bounded elliptic curve parameters are in the script, allowing the efficient verification of a broad range of elliptic curves schnorr signatures... rather than a fixed curve

has anyone proposed this sort of thing before?

seems like it could allow higher bitness, broad hsm compatibility, and a "decentralization and competitiveness" of security parameters for different environments

would be useful to me, but not sure how many people care about this