That is certainly something I could do. We'd have to figure out how the bot would evaluate the posts and then set it up. It wouldn't be too hard.
The way my @caturday.curator bot works on Hive, it looks for posts with cat related tags every four hours, then it picks up to 5 posts randomly and evaluates the posts based on the number of words and the number of images, then upvotes them with a percentage based on the evaluation.
I could do something similar for the Daily Prompt posts.
That sounds good. Here on blurt, I have it open for writing, photography and art...
I don't know how that would work.