I'd think that's completely up to the group..They are their own group of people, with their own lives, who also go to other cons. It's not up to Kumoricon to decide if they attend or not in order to run their panels. If I'm not mistaken, the reason it's called "Slightly Anime" is because that's what the group of people called it, and not something Kumoricon came up with. Therefore the only way it can come back is if the group attends and puts in an applications to run the panels.
