Good luck getting that upstreamed and accepted. The more foundational the tools (and GNU coreutils definitely is foundational), the more difficult that process will be.
Releasing a standalone utility makes iteration much faster, partially because one is not bound to the release cycles of distributions.
How `more` became `less`.
The name of 'more' was from paging - rather than having text scroll off the screen, it would show you one page, then ask if you wanted to see 'more' and scroll down.
'less' is a joke by the less authors. 'less is more' etc.
* https://freshports.org/sysutils/most/
* https://ftp.netbsd.org/pub/pkgsrc/current/pkgsrc/misc/most/i...
* https://packages.debian.org/sid/most
One can even get pg still, with Ilumos-based systems; even though that was actually taken out of the SUS years ago. This goes to show that what's standard is not the same as what exists, of course.
* https://illumos.org/man/1/pg
* https://pubs.opengroup.org/onlinepubs/9699919799.2008edition...