Statement: One of the major downside of part 2 is the drama side went up tenfold, albeit taking it serious; unlike part 1, where it was more comedy, "fun," and action. Instances such as Naruto and Sauke being rivals more so than brotherly lost love, Naruto being loud mouth usual Shounen protagonist, etc.
Agee or disagree?
Disagree. Drama wasn't the issue.
The issue was not either understanding or simply not caring about the nature of his characters or his actions. For example,
Statement: Despite Itachi being planned to be a hero, he should have remain a villain.
Agree or disagree?
Itachi openly tells Naruto about what he did. Naruto knowns Itachi, despite waxing on about hate, purposely nurtured that emotion within Sasuke for the purpose of Itachi's own penance. It's not hard to understand why Itachi might feel that way, but it's hypocritical and, far worse, horribly selfish. Sasuke's walking that path might have been unavoidable, but Itachi went out of his way to make it happen.
Naruto, hearing this, says nothing. Really?
Worse yet, Itachi keeps his own brother alive and the rest of the kids? Nah, sucks to be them. It's hard to believe Sasuke was the only child of the whole clan at the time. The manga totally ignores the fact that Itachi almost certainly killed innocents while sparing Sasuke for selfish reasons.
Part 2 is filled with problems like this. That's why it sucks.
It's probably better he remained a villain simply because Kishimoto was not prepared to deal with the "good" version. Because of the position he was in, there probably wasn't a way Itachi could ever wear that mantle, but I'm not at all sure Kishimoto could see that. That said, I think either path, objectively speaking, could have worked had those involved understand the implications of what the "good" path meant.