If we combine a bunch of your TTS banks and a good quality room reverb plugin do you think it would be possible to make the sound of a bunch of people chatting in a large room or hall? Like make up a bunch of conversations and use the plugin to position them at different distances/positions from the "listener."
Is it possible to make them laugh? Or cheer? Or chant? ("Encore! Encore! Encore!")
What about reaction noises like: "un-hn, yep" ; "ah! that's right." ; "aah, I see." ; "huh?" ; "ooh." ; "oh!" ; "wha?" ; "oh no." ; "augh" ; "uwah!" ; "(gasp)" ; "hey!" ; "woo~!"