Improvements on new Bookshelf

My idea is that every book type has its own image. That means if I place any enchanted book in there it will have one specific image and if I place a signed book and quill in there it will have a different image. Then you could see from the block texture what kind of books are inside. What also would be great is that you could place a book on wich ever spot you like. If you aim at the bottom right the book will be placed there. Something like aiming at an fully armored armorstand to get a specific part of its armor. And what would also be great is that this that this bookshelf for the enchantingtable and depending on wich and how many books are inside you would need less bookshelfs to get to an level 30 enchantmenttable. I hope you would also like to these ideas in the real game