Kayn is a perfect example of a healthy generalist
The dude HAS TO CHOOSE A PLAYSTYLE IN THE GAME
he can't do everything at once unlike 
just like
, they're both healthy generalist because they can choose one playstyle (like poke with kha) and give up an other playstyle
in dota2, Rubick is the ultimate generalist as he can become any enemy champions with spellsteal, but it has a cd, he has to decide what he wants to be instead of doing everything
you need to rework every single generalist of this game to be like them, they have to choose to focus on something in each game instead of everything