Honestly, this whole conversation has been feeding my growing appreciation for MGS4. I saw an analysis video recently, due to a friend getting into the franchise and asking why I never beat 4, so I decided to check out some analysis and then give it a second chance.
While I've been familiar with the passive aggressive nature of the game towards MGS fans for a long time now, the video argued some pretty potent points. It wasn't just Kojima angrily giving fans what they said they wanted, as that's what Snake Eater was all about. How it was an apology to fans who didn't like MGS2, but at the same time it was telling them with it's ending they weren't the hero because they were ignoring the messages of MGS1 and 2 about living their own lives and not projecting onto the game. MGS4 was about the bastardization the franchise would undergo if it were to keep on continuing, accelerating Snake's aging to give the idea that it's not 4 but something like MGS 8 or something. This would allow Kojima to give the franchise a definitive final message, much like Tomino did with Turn A Gundam, while also showing fans what they said they wanted wasn't all it was cracked up to be.
If you want answers to the mysteries, you're going to make the setting more mundane. Everything being nano-machines is part of this.
If you want things to get bigger and more action packed, normal soldiers aren't going to be a thing anymore. See the Gekkos and other enemies who mop the floor with regular soldiers. Not to mention, rejecting peace to keep plunging the world into warfare (the post-Guns of the Patriots games all seem to go more into this direction).
If you want something like COD, then it's not going to be very Metal Gear now is it? Not to mention, real soldiers don't act like they're in an online COD match with infinite respawns and not suffering PTSD.
If you want the characters to have more adventures, then it's going to do a number on the lessons they have learned, Or you they could end up being unrecognizable or contradicting who they were before.
The game was built for stuff like that, acting as a grand finale for a franchise that was supposed to end two games ago. It was a warning of what not just Metal Gear could become, but any franchise. I mean, Fukui is taking the mystery out of UC Gundam with his stories, Terminator has been rendered meaningless due to Dark Fate killing John Connor, Luke Skywalker has been turned into a failure to prop up new leads... we could easily make a list of franchises that have fallen into the same traps Kojima warned us about. At least MGS learned that switching protagonists had to be done with care (see Raiden was meant to show us how awesome Solid Snake was, and Big Boss is meant to serve as a foil).
Naruto would be among them, full stop. I mean, I think about stuff like the Zabuza fight and how that was the high level the characters would work towards, but with how DBZ later fights got. We have messages and characters being assassinated or flanderized. Things got convoluted as all hell due to the series explaining some mysteries with stuff that came out of nowhere. The idea that the ninja system needs to be continued and Naruto's role in it. The story extended past where it should have ended so people could continue profiting off of it. The fact that Naruto failed to change the world like he was supposed to, as the series became soulless.
Naruto should have been allowed to die with dignity, instead they have to keep it on life-support to protect themselves. I'd say it was a damn shame if Kishi had ever really put himself into the writing instead of bowing to editors.