When Age of Sigmar first dropped and the Seraphon section was added, the lack of any points system resulted in the decision to not include a forum for Seraphon army lists like Lizardmen and Salamanders have. However, some months on, several points systems have sprung up and are in mass use. Sometimes it's a Wound limit, sometimes it's something like the Azyr comp system (which I have real problems with, but that's a topic for a different time.) So now because of all these systems in place, a majority of AoS games do have restrictions that necessitate army lists. So would an Army List thread not be valuable for the Seraphon forums?