It was Kabuto that said that he was going to us "That" wasn't it?
Oh then nvm what I have been saying.
maybe izuna and madara did exchange eyes, with madara dying against hashirama, while izuna faking his bind death, and now pretending to be the infamos madara o_O
probably not, but hey; just saying
and the design probably would have looked different, not sure..
if tobi relly is izuna, he can relate to sasuke that much more, correct? being the little brother mad at the sacrifice and betrayal of hiw older brother, seeking revenge against the world. sasuke would be a perfect reoplacement, though i prefer him to be saved by naruto and redeemed..
i'm an original team7 fan XD
We also do not know how Madara gave Nagato the rinnengan, or how he came into possession of the nine tails prior to his fight with Hashirama.
second question: madara simply walked among the grass, was attacked by kyuubi, then used his EMS eyes, and threw one master ball, BAM! kyuubi was captured, much like pokemon.. i can see it all now.
Another thing that might be a reason why Izuna would pretend to be Madara is to honor his memory if he actually died in the battle against Hashirama. Wanting to preserve his memory and fulfill Madara's dreams. MAAAAN GIVE ME MYSTERY COFFIN!