I just straight up prefer not using real people as face claims in my RP's. For a medium that celebrates creativity of fiction, using real people in roleplays (even face claims) always feels a little weird to me. Also, in that same vein. If I can be anything other than a human in a roleplay, I will more than likely choose something else. Because again I feel like what people can and what they have done to humans has almost been entirely explored and done to death. For obvious reasons sure, but I'll say from personal experiences alone people in general are far more creative with personality, backstories, dialect etc for non-human characters and plot lines. Which from a writing perspective is desirable for me.