Eto is so fucking dead it's not even funny, same goes for the Hachikawa squad, maybe Mutsuki will end up as the QS test subject like Shirazu.
Eto sure has a lot of motives, breaking out of the birdcage, flushing a liar (Amon's CCG conspiracy probably?), making a better world for ghouls and possibly taking revenge on V for killing her mother, making her father run away and ruining her life. and all this revolves around V.
This'll probably end up with Eto dead and V (Furuta and Arima) betraying Kaneki (maybe because he learns from Eto too much about their world balance shit and their control of CCG) and him somehow ending up being the second king of Aogiri. I also wonder how and whether or not Amon will be utilized in this arc