You really think this would have been better than Obito? I know it's easy forget because it's been a while, but you do realise that Obit played this exact con for years, decades even, don't you? Obito found strength in anonymity, it allowed him to fuck with Earth and Water country from the shadows, he was at the heart of conspiracies in the Bloody Mist, and even did outsourced work Ōnoki. In the years that Akatsuki were hiring themselves out as mercenaries, it was Obito who behind all of it. He had dealings with pretty much every player in the entire shinobi world, all under fake names and from the shadows, completely taking them all for fools.
um yeah that's exactly what I was talking about, I loved Tobi doing all this stuff
Now imagine if it hadn't been Obito and some random dude from some random place. What would that add to the story?
I just explained what it would add, it completes the idea that he is the personification of the ninja system, his or her true identity is lost and it doesn't matter who he/she really is. Naruto wouldn't just be fighting against some person, he would be fighting against an ideal a concept.
The only reason he's Obito is because Kishi is loves his parallels and needed Obito to be redeemed, I am not interested in that story, Nagato was enough.
I also think referring to Obito's feelings for Rin as an "obsessions" doesn't do it justice. In that one chapter we got in which we saw kid Obito, it was pretty clear that he was a bit of a loner as a kid and the only one that actually seemed to care about him was Rin, and when she died it was the trigger that set him off. The reason Obito kept Rin in his heart all these years later was because he never wanted to become the person he became. You could so easily see it every time he spoke to Naruto after he was unmasked, questioning his beliefs at every turn. He saw what could have been in Naruto, and he must have hated him for it because he tried his damn hardest to make him taste despair like he did and let that change him. It wasn't until recently that Obito finally changed back into the same person that wanted to be Hokage, as he said so himself.
I really don't care enough to argue too much about this, what started as a sweet boyhood crush started becoming creepy the more I saw of it. That would actually be fine but it kept being portrayed as if it wasn't creepy.
