What I didn't see in this (and the couple others I've seen mentioned) is talking with more than one character in a scene, or having multiple scenes with the characters in different positions/poses/clothing.
My particular story has a number of folks with various handicaps (magical realism with a COA vibe), and trying to get an AI to do a reasonable character in a wheelchair is hard but doable, while amputees or folks with hearing aids is nigh on impossible.
To be fair that's probably more a "me" problem than a "you" problem...