Nice thread but I doubt it was Obito... why would Obito create a clone to make an alter ego of himself since he was confident in his Juubi powers? I mean Obito never imagined to lose to Naruto...
Ehm, if Obito would be a good guy, then why just not revive Madara and kill zetsu and voila your done? xD
He's not pure, that we've seen so far. And also he didn't recognize Naruto's strenght only until the end of the battle arc. There're a lot of holes in your theory mate, if you can even call it one...
I like the way you are thinking, and it is totally possible. No one is better in planning than Obito so he might just have that ace up his sleve. Great Theory, I would totally like that to happen =D
Tobirama couldn't recognize otherwise he would have known about Obito.
Secondly, Obito got the Juubi extracted not once but twice, one was the juubi's chakra and the other was juubi's body. That could have become a fatal blow to the other Obito.
Plus Madara could have sensed Obito(who split himself as well as who stood in front of dead Sasuke)