Has there been any refinement on a mission statement for it? If I recall correctly from the mailing list when this was first proposed, someone had a use case f

Has there been any refinement on a mission statement for it? If I recall correctly from the mailing list when this was first proposed, someone had a use case for custom libc but extending it to a general purpose libc diminished properties that would distinguish it from (e.g.) musl-libc.