i gotta admit that there are heaps of manga i wish were like the books, but they have to keep note of things like time restriction, popularity of characters, so they can show the popular ones and not the unpopular and whether they realise plot holes and stuff that doesnt make much sense on reflection.
anime that is exactly the same makes the manga boring, but anime that isn't like the book makes the anime boring...they just can't win can they?
what they should do is have the first part in manga and have an anime spinoff that continues the story.