My impression is that the purpose of this challenge is to please the treater, not the treatee. That's how it's phrased - the treater was disappointed that no one requested this canon they wanted to write, here are people who didn't want this canon enough to give up a slot for it, or didn't have a good enough prompt to request for it, who are volunteering to receive a fic in it if you'd like.
Re: Mini-Challenges
My impression is that the purpose of this challenge is to please the treater, not the treatee. That's how it's phrased - the treater was disappointed that no one requested this canon they wanted to write, here are people who didn't want this canon enough to give up a slot for it, or didn't have a good enough prompt to request for it, who are volunteering to receive a fic in it if you'd like.