Yeah that video is basically what Hal was joking about in his post on here lol.

But I could see it working in the ways you’re describing. We could have her say something to Rey at the end of their conversation after “I think I’m just tired, that’s all” or perhaps to Snap when Rose is storming off. But I can’t seem to think of any instance where she has a visible line we’d like to replace or where her face is even visible for our current AI lines.

EDIT: Perhaps there’s enough visible space after Leia tells Rey “No” concerning finding Palpatine?