That's an interesting observation, and hopefully more than wishful thinking. It sounds like each of the houses, especially the originals, could tie to the icons in some way. This could possibly be another hint at ushering the icons back for 25. I still really don't understand why Caretaker or Jack were hidden out of sight in CitW, or why Jack was the focal point of the collectors merchandise last year.
Clowns -> Jack obviously
Dollhouse -> Cindy and Caretaker
Roanoke -> Storyteller
Any IP House -> Director