Much like all Uchiha, Sasuke has always been a leader. When the war ends Orochimaru and Sasuke probably won't be welcomed with open arms by most people or ninja of the hidden leaf.
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So I propose He starts his own village or takes over a vacancy somewhere and has an alliance to the leaf much how the Uzumaki had Uzushiogakure but were tied to Leaf. Maybe Orochimaru goes back to Otogakure.