I've mentioned this before - I'm using the melodies I've created together with my AI songwriting assistant as input for further training. This requires human judgement and I only have around 100 melodies that I've judged as good. But the training set is small, so together with "bad" melodies, this already makes a difference. I don't know if I'm the first to do this for AI art and be able to say that there is a difference (lower loss on the validation set of human melodies). Over time, it could result in style drift and increased originality and I don't see why it couldn't be done for AI-generated images as well with some more effort (because the training set is much larger).