First of. Whatever happend. I strongly don`t think Naruto will end up dieing.
1: He would be just like his father, and that would be boring
2: he would be like almost all the other Kages, sacrifising themselves in battle.
He suppose to change the world, and i don`t think he will do that by dieing in battle.
He will follow the footsteps of Jiraya and Minato, but in the end rule as Hokage for many, many years(like the Third, but Naruto will step off and live peachfully and not die in battle!

). That`s what i believe. And about Naruto and Sasuke getting too strong? Love it!

I hope they get as strong as the first and Madara was or even greater, cause clearly... They`re not there just yet. Actually. I think its way too little of the really great ones. They all need powerups and it would be awsome to see a battle between the two where they crushes montains and leaves gigant metorite marks in the ground. Kinda like Pein did when he use his gigant ball something and smashed Konoha.
Give both Naruto and Sasuke full powers(they`re not even 18 yet!

) over time. Imagine how powerfull they will be when they`re at age of 25

I guess Madara and Harishima was around that age or older when they fought. I believe Naruto and Sasuke are still too young to have a battle of life time