It wouldn't matter. Naruto and Sasuke shit on any form of Madara and Orochimaru at this point. Even with Madara's body, Orochimaru couldn't even push Naruto and Sasuke to a medium difficulty win.
Perhaps as a teaser of sorts they could show a random panel of a snake slithering off into the distance, but as far as him becoming the major villain right now I think it's too little too late.