I really like Jasnah, mostly because she ISN’T perfect.
She has turned ‘Striving for Competence’ into an art form and perfected it. She is absolutely brilliant and from the outside it is difficult to see any of the Humanity behind it.
I can’t quote any of the relevant pieces, but there are a few from Shallan that vaguely come to mind where Jasnah’s calm, perfectly self assured demeanor shows cracks or breaks down visibly.
Trauma in her past or simply her personality are things that I won’t even try to comment on, but She is sort of the Ideal that appeals to me the most in the SA. Be so Storming competent and self assured outwardly that all of your internal struggles are either yours alone or only shared with a VERY few, very close people.