Quote from kirabook
Anyway, yeah, I think this plot device is pretty logical. But again.... kinda pointless if Kabuto is just about to be killed by the Uchiha bros.
True. I've been wondering if Kabuto is meant to be the next major villain, after they finish with Tobi, or if he's meant to die here. With this chapter, the setup is there to make him into a major villain. That is, if Kishimoto wants to do a variation on DBZ's Cell with Kabuto slowly amassing DNA from all the important characters in the series. (The fact that the Uchiha bros. can't kill him means he could still escape in the end.) Then again, Kishimoto likes to do flashbacks right before the villain dies, so we'll see...
Whichever of Kishimoto's assistants draws the backgrounds for him really did a great job this chapter with Orochimaru's laboratory.