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^^
I'm glad this discussions heated up, a lot more information is being thrown around. I must admit that I'm just a Go player, and I know absolutely nothing of what you guys are talking about, though I understand enough to consider them. If directed toward me, make sure you take into account I don't know anything about anything. I assume you have

I haven't even decided what kind of book to write, but I know I will go for something unique

A long time ago I wanted to call a book "The Silent Stone", and teach how to win games with the peaceful moves, and expand on endgame and value calculation. It was going to teach a certain style, showing situations where there is a fighting move and a peaceful move that are both equally good, and how to win a game in the most simple way.
Now that I'm stronger than then, I think it's a bad idea. Those teaching would tell you how to beat 3 Dans, but later on you'd have to unlearn it. 4-Dan to 5-Dan for me was, quite literally, hogging territory --> Playing balanced, and looking for places to fight.
So what should I write?

I'm thinking a "Specific Level Up" type of book, as in, getting from 5 Kyu to 1 Dan.
I would show all kinds of practical Tesuji and stuff that I learned at that time that made me go, "Wow, you can do that?". I would also provide all the Joseki I think a 5 Kyu should know, and it would continue like that, giving the reader some new Joseki and fighting techniques to meet the needs of their level. Most importantly, I would like to explain how to think, and how to carve out all the incorrect and useless thinking by Kyu players based on my own experiences with my friends and I. I think when explaining such a thing, it's more appropriate, and more "correct", to speak very humanly and get the points across in the easiest way possible, rather than using the same language used to explain tactical diagrams.
I also want to wait until I get stronger, it's kind of a chicken and egg thing. If I'm not stronger, my book may not be as attractive. If I work on a book now, I may not get stronger very quickly

I just started 3 online leagues at once, and just got a job, so.....