Similarly sudo-rs and doas-rs exist now.

I'm not sure what can be gained for further development of the OG c sudo, add security patches of course.

But fund adding yet another feature 99.9% of users will never use? I can't fathom the justification for that. Just adding attack surface at this point.

Rightly both doas and the *-rs drops ins intend to drop most of those unnecessary features.