Yeah, the cult headquarters is one of those placeholder things. Something related to it is coming in a later upgrade.
Other things that have been added in the meantime: rival cultists (both from outside and within your own cult), romances (you can take people out on dates) and wounds (your followers no longer outright die when they fail a check, instead they get wounded and you get a chance to heal them before they’re gone for good)
It’s still possible to win the game with any cult, it’s just a bit harder to do with a cult whose principle isn’t aligned with the ascension path you want to take.