It wasn't because of quest requirements that Lu Li wanted to change Jaina's mind.
It was because he wanted to affect the story himself to clear Valeera Sanguinar's presence. This was another notable Thief in the world of Dawn.
Western people, in the olden days, tended to say who their father was upon first meeting someone.
However, in the western legends, while the main protagonists might not have a good father, they always had a connection to other notable figures.
The reason that Anduin was able to lead the Human Alliance was because he was a descendant of the great Thoradin. However, Thieves operated unlike this. The more renowned a Thief wanted to be, the lesser known he would have to be.
Therefore, Thieves were called Stealth Stalkers who walked in the dark.
