BZ being relevant and Kaguya's will.
Madara's end (weather dead or not).
Madara using Izanagi after being dead and he fooled Tobirama with a Kagebunshin (Here I was under the impression they disappear in relatively little time. Plus I'm sure to study Madara's corpse you'd have to do an autopsy. How the hell does that work..? :|).
Minato having Sage Mode.
How Kaguya returned (Just weird how she took over Madara like that).
Madara biting and swallowing some of Hashirama (He woulda been like, "D-did Madara bite me?!).
The Juubi being a bloody tree... (I was like, "The faq?!".
Transmigrations.
This is it, for now...