Yes because the novels are so different its going to change my opinion about the way the series is organized, right? wakawaka Regarding the hole series, the characters aren't even that interesting either. I know this series is supposed to be pretty dark but it sacrifices certain things to make it that way. We see a group of very serious characters (Whom we don't know much about other than a little history about each) interact with each other in that serious manner (To keep the series dark, god forbid someone be happy in the series.) And its overall just pretty boring. Its so bad that whenever I see a "proto" character of someone from Tsukihime/FSN I think to myself "Oh that's proto-Shirou." or "That's Proto-Shiki." because the characters really don't establish themselves well. So tell me, Why is the series organized in this confusing fashion?
Because Nasu needs to learn to write better. Reading the novels might get you to understand why the KnK movies are as they are because you realize they are just following the story as Nasu wrote it. His works are difficult to read through, he likes to contradict himself during his writings and he creates loopholes in his writing as well all the time. On top of that, he tends to make up words or change the intended meaning on words which creates disagreement on the meaning of phrases by translators.
I have read a number of his works, most in the original format, just transcribed onto the internet, and it is typically chopped up, distorted and overall confusing a lot of times as I go through. To understand what the story is about, you normally have to go through the entire story of whatever you are reading to learn all the basics, the stuff that is normally presented at the beginning. As you go through, you'll hit the big climax of the story and sometimes he'll just be introducing some more stuff that needs to be known beforehand to get the full picture.
Overall though, it's not hard to piece together everything he is saying, which is why there are so little negative connection to his writing. It is just Nasu's way of writing and I wish he would write in a more clear format, but then again, the way he writes and the way you read/interpret it is part of the whole Nasuverse that creates the setting and impact that he desires from his stories. I think he does a good job, I'm sure at least 80% of the people out there who read his works thinks he does a good job too.
In addition, all of Nasu's works are dark. They don't make themselves out to be happy endings until the absolute end, and even those seem more satisfying than happy. He doesn't create superhero characters as his main characters, he makes ordinary people who happen to have an extraordinary power/ability being the main character and they decide how they are going to use that power. Whether it be Mystic Eyes, magic or possession of a weapon not able to be wielded by any other. These powers are what make their users different but really, they are just normal people not trying to make too big a difference. Shirou may be the exception, but he doesn't actively use his powers to save people (ignoring his 'potential' future). In the story, he is just a boring, everyday person living his normal, boring everyday life...same goes for Shiki in Tsukihime and Shiki in KnK...and GunGod to some extent if you read Notes