Obviously it might be a slightly futile task given the size of the dataset, but would there be value in adding community captions to some of the images? I'd be happy to spend 15 minutes captioning the worst-labelled (maybe cosine similarity between stabdiff im2txt and the prompt?) images in the set / reviewing other people's captions, and if you can get enough people on board you could probably get through a not-insignificant number of new captions. Equally a risk of anti-ai groups sabotaging this process though