I agree. Guests at Kidani can still use all of the facilities at Jambo House so you can go there for the fire/storytelling. I'm not sure if they'll put anything else in at Kidani but don't see them replicating something already offered.
I suspect instead of duplicating something already offered, they will likely have something "different" for Kidani. I think the major difference is going to be the interactive water play area.