interesting theory!,
i wonder what sasuke would make of obitos death just cause he also had a part in the uchiha massacre
Well Sasuke did state that he would pursue Itachi's accomplice during their battle but that was before the revelations corrupted him. Ever since he decided to destroy Konoha he hasn't really paid much heed to Tobi. To be honest, considering that Sasuke allowed for a delicate transplantation procedure to be performed on himself whilst (presumably) under sedation it seems like he might have trusted him to some degree. Of course, that's changed with Sasuke's allegiances having been swayed once again.
Quite a few unanswered questions concerning Tobi remain. Why did he choose to massacre the Uchiha Clan when it was Madara who was embittered after they ostracised him from their ranks?
What exactly are these "paths" that he referred to Nagato as being the third of? Is it perhaps a reference to a manufactured list of prerequisites that one must fulfill if they wish to become the next sage?
Why was he so fascinated with Naruto's ability to dissuade Nagato from his catastrophic notion of peace? If he was only interested in bringing about the Mugen Tsukuyomi then why did he explain to Naruto that he wished to recreate the legendary conflict between Hashirama and Madara through him and Sasuke?
Tobi has reiterated numerous times that he has no compassion or interest for this "false reality" yet he apparently found great delight in it by masquerading himself as a childish and naive subordinate for Deidara at the beginning of P2. If he is only concerned with implementing the illusionary world then what purpose was there to creating this facade? Perhaps it was to mislead the unsuspecting members of Akatsuki so that there wouldn't be any objections from its operatives who may not wish to see the Moon's Eye Plan come to fruition.
Then there is the issue of his fixation on Sasuke. We're aware that Tobi wanted to sync him with Gedo Mazo after Nagato's betrayal but why would that compel him to see to it that he becomes "evil"? You can see a clear example of this below as he's gleefully reacting to Sasuke mercilessly sacrificing Karin in order to kill Danzo.
Is his excitement to witnessing Sasuke lose what humanity he has left somehow related to the confrontation he wanted to reenact between him and Naruto? Later in his life Madara did become a pitiless, cynical maniac who was obsessed with inciting conflict. Could this be an attempt at conditioning these two to become like Hashirama and Madara in personality? Or is Tobi just doing this because he likes to stroke his ego? Take in a young Uchiha who had just been left in a psychologically volatile state after completing his only objective in life, string together a specific collection of words into a life shattering revelation interlaced with a few conveniently untold details, and then set him down this anarchic crusade ladened with one inconvenience after another that coerces him to abandon what compassion for human life that he has left.
Who wouldn't find enjoyment in having that level of influence and authority in another person's life? It contradicts Tobi's stoicism for the world though.
Alternatively, maybe Tobi looked at Sasuke as a protege of sorts who could adopt the same ideals as himself. If you look over the wholeness of their lives, everything that they have ever experienced, the things that motivate them, their ambitions, the fact that they're the last two members of a virtually extinct clan of warriors descended from the man who was considered to be a god in their universe, they actually have alot in common. Interestingly enough Kakashi thought of Sasuke as being similar to him. Both he and Tobi were once on the same team. Could that be an indication of a choice between two ethically dualistic mentors whom Sasuke had to make a choice between? It seems very reminiscent of Naruto in P1 when he compared himself to Gaara; how he could have fallen down a similar path of resentment and savagery if the people in his life hadn't saved him from his despair. The only difference here is that Sasuke is choosing the opposite path. Instead of becoming like Kakashi, who represents the "good" choice, he is abiding by the precepts of Tobi's "evil" choice. It coincides with the fallen hero archetype that Kishi has established for him.
Anyways, getting back to the questions, there are a few other details that seemed out of place. Back during the Kazekage Rescue Ac when Tobi and Zetsu were in the remains of the cave that Sakura fought Sasori in the conversation they had with each other that was unusually different compared to later ones where they appeared to have an understanding of who the other person was. Tobi was using his frivolous persona and discussing how he wanted to become a member of Akatsuki with Zetsu who was responding like he had only just met this person. But considering the background information that we were given thirty chapters ago they should already know who the other person is since they are working together as the clandestine figureheads of Akatsuki. Tobi and Zetsu should be comfortable with taking to each other without the need for etiquette or a facade. There was no one else around at the time so that wouldn't explain their inconsistent behaviour either.
Just take a moment to glance over these panels.
They're acting uncharacteristically distant from each other, are they not? In the following chapter when they encounter Deidara the tone of his sentences and the fact that he understood who this man was suggests that there may have been previous interactions between him and Akatsuki. But what could account for Zetsu's conduct in the above panels? This is just another mystery that has yet to be properly elaborated on IMO.
One other scene relating to Tobi which I found interesting was the exchange of dialogue that he had with Zetsu following Taka's departure for the Land of Iron.
"It's supposed to be for me."
Tobi had no reason to make that statement if he and Zetsu were already aware that the actual Madara is still dead. Rinne Tensei is a resurrection ninjutsu that was supposed to be used on Madara. Was he just unnecessarily playing into the persona he was going by at the time because he felt like it? There wouldn't really be any sort of benefit to that unless Tobi just finds gratification by acting the role even when no one is around that could be fooled by it.
Oh, and he seems to be under the impression that Sasuke would act uncontrollably yet later on he's enducing these sporadic mood swings with the intention of corrupting him. Does Tobi believe that the more "evil" Sasuke becomes the easier it'll be to manipulate him? Factoring in how chaotic his demeanour was during the Kage Summit arc I would say that this ideo would have backfired horribly since Sasuke showed willingness to kill even his closest allies if it suited his aims. I assume that he wouldn't take too kindly to being forced to act as some else's pawn.
Why would Tobi want to synchronise Sasuke with Gedo Mazo in the first place? How would that even be possible? We're lead to believe that in order to control the Mazo you must first acquire the Rinnegan. Sasuke doesn't have it though. Tobi may have eventually implanted Nagato's Rinnegan into his eye sockets, it could be the reason for him not implanting the other eye into his body so Sasuke could act as a backup means for the Mugen Tsukuyomi should things go awry, but that was contradicted with his later desire to have Sasuke acquire the EMS. Was he intending for Sasuke to develop his own Rinnegan? How would it be prudent to endanger yourself by challenging a previous associate for those eyes if the person who you intend to use them on can create his own through a simple injection of Senju DNA? The only explanation I can give for this is that Tobi requires the eyes for the part of his scheme involving his desire to assume the title of Sot6P.
Synchronisation, if it's anything like what Tobi and Madara were doing recently, appears to be the means through which the Mugen Tsukuyomi will come about. But that implies Sasuke being entrusted with the duty of creating the illusion. When and where would Tobi have the time to instruct Sasuke on how to use the jutsu which Madara taught him as a child? There is a likelihood that he may have been referring to a sacrifice for the Rinne Tensei. However, that begs the question: why leave Sasuke with that duty in the first place if the goal is to have him fight Naruto in a climactic final battle that parallels Hashirama and Madara?
Honestly, despite the many positives of Kishi's story certain details just seem convoluted in nature. These plot points can make someone question whether this was the direction he had for his story at the time when they were established.