Yes! Save the books! As a writer, I have wayyyyy too many books for my own good and they all have to be in my office since at any moment I may want to reference that fantasy book I read when I was 13, right? Right?
I love all your tips (and use them) except the color-coding. When you read speculative fiction and buy mostly paperback, one spine can have such a variety of colors that it’s pretty much pointless. I try to organize by subgenres instead. But then…that’s because I’m an addict and own so many sci-fi/fantasy books that they CAN be broken down by subgenre…
I cringe when I see bookcases with no books. I love the pretty as much as the next person, but they are BOOKcases, hence they require books to be in them. We also have a ton of books and I converted an formal dining room into a library and love the look, makes me feel instantly calmer when I walk in. Save the Books!!!!