Thanks! Not currently, but I do use 'hidden arrows', which are much harder to see, whenever there's a secret room/area nearby. I could probably turn that arrow to a hidden one, making it much harder to see. Enabling/disabling arrows is a good idea, but I would have to change thousands of arrows to make that change currently. I'll take it into consideration though for updates and if reCO2 becomes a thing.
You can't actually see or reach the bottom parts of those shelves + you'd be able to reach those book from both sides as well. It's a different view of perspective.
Hurray for no puns (Zephy must be happy). I wonder if people will find the name "Laputa" funny... xD