I love the extract feature. I use both chat and snippets for collecting and structuring ideas. When I'm done, I extract it. Right now, this results in multiple chapters with one scene each. To move the scenes manually to all the chapters they actually belong and then delete the empty and useless chapters can be quite a hustle.
It would be awesome to extract scenes. From a dialog I choose the chapter I want to add them to (similar to choosing the act for adding chapters) and boom, all selected scenes are in the right place.