Think about it, especially in reference to the most recent episode of Discovery: he's a member of his people's aristocracy; he's a lot better at martial arts than you'd expect a man of his profession to be; and, most importantly, he keeps gaining new children.
Honestly, though, Michael: if you think you're Sarek's greatest disappointment I question how well you observed hims interactions with his biological children. (Yes, plural, I acknowledge Sybok's existence even if Paramount never will).
Though, seriously, it is probably for the best that no canonical or spin-off media will ever revisit the disaster that was Star Trek V. It was not a good moment.
It introduced rocket boots to the franchise. That's the only legacy that film deserves.