Here you go, the post on Naruto/Obito.
Long post inbound!
First of all, the whole situation between Naruto and Obito have started since the time they set their eyes on each other. That said ask yourself, why on earth is the pacing is going the way it is now. Why not go the pace of Nagato/Pain vs. Naruto? Because in that battle, it's about finding peace. In Obito's battle, it's about new vs. old talking to each other. The situation is much bigger than anything else.
Let's quickly recap. Obito is Naruto of last gen. Enough said. That's all you need to know. That said Obito has changed his life in a complete opposite because everything he once believed is a lie. So where do we start? First of, Obito cared about friends and he had connections to many. Now, he don't care anymore. Enter volume 64. That volume was highly focused on friendships because Naruto finally got his friends on his side and it's all about trust/sacrifice. Obito don't believe it because they will die and they can't be protected. All of them will die in vain. However, Naruto was reassured that everyone will die eventually in a combat, but don't stop because they died with a reason and even so, they'll be in his heart. Obito hoped it would be th end of Naruto, but he bounced back.
In volume 66, it continued from the friendship theme, which concluded that Naruto won't stop fighting and even if his power is draining because of his friends, he would rather die than his friends die. Therefore, Obito gave up on persuading him on friendships and so, enter him and Kakashi. Let's skip that to the current volume.
In this volume, this focused on the fact Minato was the guy that gave him the belief of never gving up on love and reaching that dream of becoming Hokage. That said that's why Obito attacks on Minato because he gave him a false belief. It's like if a guy gets "reborn", he would hope everything would change, but it doesn't or not at least the way he hoped for. Not only Obito tried to bash him, but he also putting the blame on him for Naruto to understand on harsh reality, but he didn't give in. That part is over. So now, where do we go next? Likely point, love.
When you recount every moments in this battle, we went from friendship to family to something that we are waiting for. It's likely that love is the next and final step because Obito is slowly understanding the sense of hope, something he hasn't felt since his youthful days. He understands friendships matter in the real world, understands that bad moments happen but you can pull through and go further to the future, hoping that dream can come true, and the importance of being alive such as carrying the will of others in which this case is for Minato/Kushina. Now, which one carries the Rin's situation? That's right. None.
This is his main driving force and it must be addressed. Minato don't understand completely on why Obito became the way he is now. Kakashi knows but he can't do anything because he has already tried and he is on the verge of killing Obito without remorse. Naruto is not a killer and he will know him before they are done. Love is personal and that's the only part that hasn't been covered. So, how will the parallel and Sakura get involved?
Well, this is up to Kishi's way of handling. That said let's think of the possibility. First of all, Sakura is behind and Tsunade is still away. Is Kishi stalling Gokages' arrival because of this volume focusing on one thing? If so, is it possible that without Tsunade, Sakura can't enter the battle? Can she do anything since Obito is immune to non-senjutsu? Who knows but love must be addressed and must be dealt with in order Obito and Naruto understand each other completely. Why Rin is being shown many times? Why 540 and 635 for Sakura happened the way it did? Why 631 for Naruto/Sakura happened the way it did as well? Why Obito didn't even see Sakura in her glory back in volume 66? While I can't many of these questions, but I believe the answer is being stalled for a reason. Is it possible that Naruto/Sakura would actually end in a very glory moment? You decide.