Li Li is missing a piece in her arsenal to become at least a mid-tier healer. As a main healer myself, she is just too easy to play and with no way to get extra value out of her with skilled play, because you cant really skillfully play her.
I suggest LiLi’s trait, Fast Feet, should also slow enemy heroes around her.
This would do 2 things for LiLi: 1. she could escape faster melee heroes. 2. She can get value out of skilled and aggressive positioning.
This change would still keep LiLi an easy hero to play, but also allow her to have a more interactive and useful place in advanced team compositions.