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Why havnt people think about this? Here it come...:
1) I mean REALLY!! Why would he want to conceal his face if he claims to be 'Madara' or 'Izuna' or 'Obito'? every1 know they's face so why hide it? And here is somethng interesting....the only other face that kishi hasnt shown in the manga is that of the SAGE of 6 paths! SO6P is always shown as a dark face with two Rinnegans....and if the trend of this 4th world war is followed....every character kishi has mentioned uptil now has made an appearance...and that means the sage of six paths will make an appearance too.
2) Also proof is that tobi mentions to Kabuto that the rinnegan eyes were his to begin with.. And he tells to Konan that he gave the eyes to nagato! why did he do that? coz he wanted nagato to eventually use the outer samsara technique some time in the future! (it is mentioned in the manga..he says so himself...it was tobi's plan for nagato but naruto spoiled that plan).
3) So why is the SO6P back in this masked form? Bcoz he is disillusioned that there is no real peace in this ninja world inspite of him and his future generations trying their utmost to bring forth peace. If you notice....in the manga.... tobi never really had any ideals for peace....he never strived for it and was a war monger....its so totally out of character for him to have an ultimate ambition now to bring about peace with an Infinite Tsukyomi....Peace is rather the ideal of the SO6P...and the infinite tsukyomi looks lyk just the kind of hax jutsu that the SO6P would come up with!!
4) So why did this masked man create Akatsuki? (he mentions to Konan that he made Yahiko create Akatsuki!)
to regain back all the tailed beasts chakra. To become the jinchuriki of the ten tailed beast once again and to bring forth peace in another way!(moons eye).
Obito didnt start with rinnegan, either Izuna etc. Do comment!
- I didnt write this, so you people know. But this is a good point.