This is very cute and I agree. It is a bit time consuming though so this kind of thing will have to go on the possibly later list.
If you ever need someone to write a million lines of random coherent dialogue in a bunch of different personalities, let me know <3
But really I'd love to be able to just, emote waves and convo back at them it appeases the demisexual in me, their facial animations are already so warm and expressive I can't help but to want to be nice to them!