Empty Shelves

The shelves that were emptied for the great floor rebuild are finally back in place and ready to be filled.  We hauled them in from the garage, where they were lashed together for stability, and installed them in their rightful position.  

Now that they are dusted and polished, I'm wondering ... should I return the books that have always been there, the battered paperback classics in the upper reaches, reference books and anthologies in the middle, rows of magazines on the lower shelf?

I can certainly pull together a better-looking group of printed matter, if this is all about aesthetics — but of course it is not. It's about order and reverence and to a certain embarrassing extent, laziness. I'm used to books being where they are: do I really want to rearrange them? 

On the other hand, the empty shelves stand open for change and rearrangement. Can I really let them down?