Haha the facts at the beginning are more the less ridicilous
Sasuke at the beginning too xD
LoL Kakashis eye was also destroyed and he got new one xD
Thats true but if Tobi can transplant eyes it is senseless to mention this.
And maybe there is still a secret behind Sharingan we don't know
LoL and where did Tobi? Hahaha this is the best
Even Naruto would identify Madara xD
And Tobi used Madaras Name on purpose, so by reading something about the history and keep an eye on that big fat statue on the waterfall (where Naruto fought Sasuke) he could identify Madara xD
Your Izuna Theory:
Its true he gave Madara his eyes, but in every flashback you see that Madara pulled his eyes. There was no special skill behind and now you think after Izuna lost both eyes he managed to implant Madara his own eyes?
We also never saw if Obito really died. A few month ago everyone thought Madara died direct after the fight against Hokage.
I don't know about the stolen eyes theory. if I am right Madara should have obtain rinnegan before his death, so why Tobi doesn't have Rinnegan? And if your theory would be true, why does Madara know Nagato???
I don't wanna say Tobi is Obito, but your theory is incomplete