Maybe we'll see some awesome ST ninjutsu from Tobirama, and soome sharingan ninjutsu from Izuna. To be honest, I don't care very much for their fathers...
I don't mean to speak poorly of your post or video, I appreciate all the work you put into these, but your titles are very misleading. A "preview" (pre-view) means you're showing something from the actual video, this is a prediction or could even be called a pre-review (though this isn't quite right either as a review indicates that you've already watched it once)
Again I'm sorry to condescend I really do appreciate your effort, and I think the videos are good enough to warrant people's attention without a misleading title.
This is how BOTH Madara and Izuna will acquire their MS's. I honestly think that Hashi's father will die too... It would be AWESOME if this is when Hashi obtained his Mokuton!