The moon eye plan HAS TO succed. But Naruto won't die. Here is why I think so:
We've seen that the bijuu are monsters and everyone hates them and wants only their power, but to achieve the opposite (Naruto's way) this means the bijuu have to become no longer slaves. The only way to do that is to get all of them extracted and put back into their original form. Afterwards get deattached and live sepperatly when people will understand that monsters also have souls and could live alongside humans without war, thus creating real peace. Maybe Naruto will do that with the help of Sasuke somehow, yeah I think Sasuke will get rinnegan and become a good guy in the end. Also, the main protagonist can't die in a shonen, not until the end of the series atleast so I think Kurama will do something so that Naruto will remain alive after extraction. Though I'm not sure if it'll be the same with Bee. But anyway, the point is if Moon's Eye does not happen, then why are we even bothering to watch some kids cartoon show (those where the bad guy never achieves his plan to the fullest and you know what's gonna happen)? The antagonist always has to leave the good guys in sorrow and hopeless so that they can rise against afterwards.