Never done one of these before...
Anyway, we figure out a little bit more of the back story here. Obito somehow managed to "slip out" of the boulder, so hinting at the old "used his Sharingan to warp half of his body unknowingly" theory. Strange, considering he still only has two dots...
Madara, the real one, is with all the Zetsu bodies, meaning Zetsu has been around a long time too. Cool.
Missing his right eye? Hmm...wonder what that could mean?
Obito IS fused with Harashima body. But we already knew that...
And Madara twisted his plan to sound convincing to Obito, maybe. A world of love sounds good to the Genin, but with that plan, is it really love?
Anyway, discuss, complain about Kishimoto, whatever you want.