What's great about Death Note is the dynamic between Light and L. When L died, which led to their dynamic being gone, I understand why people may think that L is better than Light. However, if Light died midway instead of L and we got a new protagonist, then it'd be a lot worse than just L dying, as the whole time we've been following Light's thoughts, reaction to his mistake, gradual descent to madness, and if he's taken out is just terrible to the rest of the story.

Starks in general aren't as honourable as him, in fact they're VERY ruthless. They only became like that because Eddard Stark was heavily influence by John Arryn who's pretty much his second dad, to be honourable. How do you think they manage to tame a house like the Boltons who in many generations have tried to rebel against them? Search Starks history and you'll find out that they're ruthless, cold, and wild people.

It makes them stronger the more people pray and have faith in them.

True that Madara’s genjutsu won’t be of use much because of conqueror’s haki but one second of carelessness will be enough for Madara to do some damage. How is Sosanoo useless just because Zoro can cut a giant made of stone when it can easily do that as well? Observation Haki IS useless against Limbo because it doesn’t matter if you can see your opponent if you can’t damage them. Naruto is only able to damage limbo due to Six Path Senjutsu. You acting like Sharingan will not be able to mimic Observation Haki, and let’s also mention Madara’s skills that he has develop throughout the years that will make the gap even closer.

Nah, this is intentional by the author.

Until we see other characters' cursed energy control, then this is pretty useless.

The MC needs active income, not passive income like crypto, shares, or anything that you just said.

Just because a character says one thing doesn't mean what they actually said is the truth. The MC may have said that he didn't fear death yet when he actually a life threathing situation, his true thoughts on it came out. This literally what happened to Itadori in the OG. Don't expect consistency in a first POV.

It should be the other way around. Armament Haki should require a strong body to utilize it while Conqueror's Haki should be purely will/spirit.

The next succeeding potential Hokage's are in a good relationship with the MC. They're not like Hiruzen who has bias, and will definitely not get swayed by people like the Elders. I think it would be a good twist if the next Hokage is Sakumo as it's not really something the readers would really happen and would immensely differentiate the story from not only the OG but also other fanfics.

You watch too much fanfics. This is also around the time when OG Hiruzen started thinking about stepping down as Hokage.

Did you even read the chapter?

It's not useless, though? In fact, out of all the things in the story thus far, this is probably one of the biggest hurdles that the MC will eventually have to face.