you say its not a fashion show then base sasukes type of EMS by how pretty it looks?
haha, to get eternal mangekyou sharingan you need to take your brothers eyes or clansmens eyes, he has done neither, and it is also seen that sasuke is losing his sight and that his eyes are straining.
Also it never states in the manga that EMS gives immortality, itachi simply states he is immortal
Why?
Tobi as we know him states its because of his type of chakra, this can also be seen in naruto and kisame, they have large quantities of chakra (even without the fox for naruto) and they heal quickly suggesting they could live longer than most others, however still not immortal.
Through ticking off whats not and what MIGHT be, obtaining the EMS to become immortal is admittedly a rather good theory personally, and could very well be true.
Also, and this is why tobi isnt obito.
Obito died, or was very near death when kakashi was a child, also when itachi wasnt even born...or when he was a very very young child, just because he activates his sharingan, doesnt mean right away anyone is going to say, " I bet thats Madara Uchiha in there", and you can't prove that he has 2 eyes and just isnt showing it, because nobody knows that yet.
It makes no sense...
characters dont have hair cuts??
Yeah they just all keep their hair magically the same length, even during the 2.5 year time skip where sakura and kiba and shino and loads of others have same length hair.
lol, wtf.