Guys... I hate to be the one to say this, as I love HHN lore, but... you're thinking about this too hard. There just isn't a lot of thought put into connecting years or characters over the years. Stuff gets retconned all the time. It was never clear what happened with FEAR and the lantern (seriously, it was never really clarified). No one's banished to the lantern. There aren't going to be any Jack clones.
I could be wrong. But unless Jack the Clown is the icon for the entire event (and from what I've heard do not expect that), he will not headline the house. He will have an appearance, either as a mannequin or possibly, if we're lucky, an actor in a mask.