So was Hashirama absorebed by Madara? That's kind of a bummer...but I guess him and Madara already had their ultimate fight. There's no need to have them fight again, that's what Naruto and Sasuke are here for.
Sasuke seemed genuinely pissed at Madara, even going so far as to call him a "relic of the past". A bit ironic coming from a guy who has spent the better part of his life living in the past. Still, I get what Kishi is trying to convey. Madara wants to utilize the bijuu's, while Sasuke wants to destroy everything that has to do with the old and then rebuild the world.
So Black Zetsu apparently doesn't feel any remorse for Obito's death. It seems like he's about to utilize his real power. I wonder what that is.
I have to wonder though, why didn't Minato stop him from overtaking Obito's body? Isn't he supposed to be one of the fastest shinobi in the world? Perhaps I'm overthinking things.
It seems like all the fodder is being weeded out. Soon there will only be named characters left. It's been a while since we've seen Sakura. If it's true that the series is nearing the end and Kishi really does have more planned for Sakura, then I hope he delivers soon.