nope K11 were never the "major supporting characters".. that is where people make a mistake.
They were the same as akatsuki. They got time in Part 1, because it was about Naruto's childhood.. you can't talk about his childhood without lookin at the other kids.
However, when it comes to development of characters kishimoto did a pretty good job. Ay/Killer B/Danzo/Hiruzen/Minato/Kushina/Hashirama/Madara/Obito/Rock Lee/ Neji/Itachi.. many more
Its the same concept followed by One piece with the mujiwaras....They simply have more time since they are a crew and constantly are the main stars as a whole. But even then the development of luffy compared to the others.. is huge. I mean Zoro is pretty much stale in regards to character development. Sanji is still the same, just more annoying now.... though Ussopp would change.. but nope same still. Only character development Nami and Robin really got are, having their boobs shown more.
Even in fairytail.. Natsu's development just sh*ts on everyone elses
Toriko .. same thing..
But if kishi never wanted to treat them as major supporting characters, why he cared to give each and every one of them different trait, and gave at least decent development to someone like Neji? If he wanted to show them as Naruto's childhood friends, he could have simply left them as 'Naruto's childhood friends', with nothing special at all, but it wasn't the case. Take an example of Kiba, he was good with sensing in part-1, but in part-2 his sensing was hardly used. Kishi could have gave him some backstory, because he had 'potential'.
Now on one piece, it is but obvious Luffy's character is developed more, because he is 'protagonist',but it isn't like others don't have development at all.O_O
Look at Zoro, he was pretty much ruthless at the beginning towards opponents, moved on to become a nice hearted guy who can help out even Marines, which he did in Punk Hazard arc.
Usopp's lies aren't now 'lies'.
Chopper has neither fear nor grudge towards human, he accepted himself.
I agree on Robin and Nami, but atleast they have some backstory, what about someone like Tenten who has absolutely no significance?
