Prediction: Sasukes Conclusion
Sasuke wants to learn the truth about, what happened to his clan, and what it means being part of a village. What was better for the Uchiha? Being part of Konoha or not?
I wont debate, who he will meet, but I believe Sasukes conclusion will be that both Obito and Madara have betrayed the Uchiha clan. Madara left it and the village. Obito caused the 9 tailed attack, which led to mistrust towards the Uchiha from the elders (and lied to Sasuke about it).
Thus Sasuke will direct his vengeance towards these 2, indirectly blaming them for the Uchiha massacre (well Obito took part in it, so he is to be killed for sure).
Whether, he joins the battlefield or something else happens, is hard to tell. I can see many possible scenarios, but lets wait for that. This doesn't clear his hatred towards Konoha, but his hate for particularly Obito will be larger than his hate for Konoha. Heck I could even see Orochimarou being like: "Heck, even I don't want to be trapped in an infinite genjutsu again".