nice theory, eriond, welcome aboard..

here's my theory:
after all the current plot lines are over (i won't explain how i think they should end here, this topic is for another reason), there's a time jump to Naruto's 25+, when he's married to some girl (prefferably Hinata) and she's already in an advance stage of pregency.
at this point we have a final arc, reavlling that the seal on Naruto is weakning from all the uses of it, and that the Kyubi will emarge again. suprisingly, that event happens in the same day his child is born, so Naruto decides to go after the 4th and seal the kyubi, and of course, the target is his own son, Naruto dies.
then there's a final time jump, about 12 years to the future, Naruto's son is a genin (with Sasuke's child, and maybe Shikamaru's one [since Sasuke will obviously go on with Sakura...]), and on the survival test, we see that the stone of heros killed in action has Naruto's name on it, implying that Naruto was achknowleged as a hero, and then Sasuke's child calls Naruto's son to hurry on (in a friendly matter), meaning that Naruto's son is considered to be a hero, like Naruto was supposed to be.

that's a fitting ending, me thinks, what about ya?

Benjamin, the guy with the 40$ paycheck; in your face, poors!