I think it would have been cool if they intergated some “basic knowledge” into it, I mean some information that is stored on main storage and can be further downloaded with Internet. For example if I ask “Siri, who was the president of the US in 1994” I would get instant answer with basic biography even without Internet. Considering it is text information I don’t think it would require much storage.
It would have been ideal for students and teachers. I do understand they all have Internet now, but considering how our world is changing and that we are literally on the edge of WWIII, this would be very handy for everyone in every corner of the world. I think this is exactly what Apple is aiming for, maybe kinda of Intelligent offline Wikipedia