You guys put far too much weight into the Story Group. They’re mainly there as advisors. The two that do the most heavy lifting are Pablo and Leland and they just ensure that whatever a project’s director/writer is doing is consistent with the established lore. And there they’re fairly powerless. See: the Starkiller’s carnage being seen from Takodana and Holdo’s last stand. There is no grand road map, they’re just doing things project to project.
They’re development executives.
Fancy word for advisers 😉
No doubt for JJ and Rian and what not they’re more just like advisors, but otherwise not at all. Development is not “advising.”