orochimaru will definately have sharingan later on i am sure. because main goal of kabuto is some how obtaining sharingan , i guess may be he will get it from sasuke or may be shisui's sharingan.and later on orochimaru will completely overtake kabuto's body . then i guess orochimaru will arise as a new power in this manga.Manga needs a more sinister super villane and which is orochimaru. hence orochimaru will creat such a havoc in this narutoverse that generation of peoples will feel the wrath and pain created by orochimaru.
orochimaru with sharingan will be legendary

villane world has ever seen.