Non-humans that are neither rubber forehead aliens nor simplistic caricatures? That's what I've been trying to say (evidently poorly). Instead of those two things, players giving their characters the full breadth of individual-personality and societal-culture elements that sapient beings can have, while still having physiological differences that matter and, thus, can influence their culture and outlook.
So, a question for the collected - we see GMs stating a desire that players do things a particular way.
Question: How does this pay off for the player? In what way are you (generic, not EzekielRaiden) as a GM encouraging such play by rewarding it?