I'm gonna throw my two cents in here.
Commissioning a story is a lot different than commissioning a picture. If you're going to commission someone for a story, make sure you do your research first. Each expansion author handles the subject in their own way, so some might be more extreme or more tame than your liking.
Really, all I'm trying to say is, don't just throw money at someone and expect to get exactly what you want; stories are more complex than that.