I think there hasn't been more fic because too many of the HP fangirls are so concerned with Harry and Ron and Hermione and the other "main" characters that they have no time for the characters who have little airtime but so much possibility. The people that are most central to the plot, if they aren't a "main" character, are ignored. ): But I will try to write at least one piece for you, maybe more.... We'll see!