I wish he would too, at least make a final arc, rather than doing the usual in shonen, shoujo and seinen manga and cramming everything into a time skip epilogue.
It's mostly in josei manga where writers sometimes do stories where the characters not only get married and have children, but those children grow up and get married. (My favorite josei mangaka- Machiko Satonaka, has several series like that, unfortunately none have been translated into English, and I haven't even seen any scanalations either)
The bad thing about the typical time skip epilogue chapter, is that things are crammed into a single chapter so it leaves the reader with a lot of questions- how did so and so happen, what happened to so and so characters, etc... A final time skip arc would give the chance to answer most, if not all of those questions. About the only manga I know that was successful in cramming that all into the time skip epilogue chapter was Rumiko Takahashi's romantic comedy seinen manga- Maison Ikkoku. (and even with that one she left out a few characters). Nobuhiro Watsuki added an extra epilogue in the Kenshin Kaden showing what happened to Megumi, Misao, Aoshi, and they along with Kenshin and Kaoru (with their 5 year old son Kenji) read a letter from Sano at a cherry blossom viewing picnic. (Saito is also briefly mentioned.)
If Kishimoto did an timeskip epilogue arc he could not just show Naruto and Sakura married and Naruto as Hokage, but the final process of how Naruto wins over and changes for the good the ninja world after he becomes Hokage. With how much Kishimoto is giving to developing that point in part 2, I know I'm going to feel a bit sad that the final process will be skimmed over in the series epilogue chapter. I'd rather see the final volume be an epilogue arc gradually moving forward in time as we see the changes taking hold and Naruto and Sakura (and the other kids) growing from their later teens into their twenties.