I wonder when Larian decided to rewrite the story and replace Daisy with the Guardian considering that the artbook still lists Daisy but there is no mention of either the Guardian or the Emperor, and not because of spoiler reasons.
The big piece of evidence would be when the artbooks were printed. I'd honestly suspect that would be around when they were announced, because I'm pretty sure they were presented physically at some point early, and that was in late 2022 which would fit with my general belief that it was about twelve months out from release. There's a lot of interesting evidence in it, from Daisy, to the idea that Orpheus' identity as the "sleeping prince" was ever in doubt (remember, the idea was Daisy would be representing Orpheus, too, at points...), a more evil looking Nightsong idea, and so on...
