Well I guess we'll be getting more than just a flashback of their fight at the VOTE, I'm glad theres more to the firsts story than that as the exact details of their battle is not exactly necessary in answering Sasuke's questions without a larger reasoning to tell it. I gave it 4/5, mainly for the awesome Kyuubi/Susano combo and Hashi's new mode.
Im not sure if this has been predicted before, but what are the chances that if Minato does eventually make it to the battlefield, with or without the other Kage, that the other half of the nine tails' chakra sealed inside him can be transferred by some means to Naruto, giving him the full power of the Kyuubi and a new, final transformation or Jutsu of some sort? Might be a long shot but he has to do at least something now hes back. Wouldn't be surprising if he worked his FTG formula into the seal or generally on Naruto somehow when trying to save him from Tobi so getting there would be no problem.