I'm not convinced on the idea but I'm curious to know how you'd plan o storing all those coins and bars in a single book... It's going to be one really really really thick book. Even if you were to limit it to one slot per coin, you're talking about a handful of manufacturers with a handful of products. To be able to create slot pages for all of them you are looking at more of a layered chest than a book...
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
More like a layered album with detachable sleeves,![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
New coins can be added by purchasing supplemental sleeves for them (when the sleeves is created).
Sleeves would have slots and information on the coin.
The hardest thing to crack is how to make the album look like it came from the year 3000.
It has to look futuristic and slick. Nothing like the existing coin albums.
Its a work in process.
But if you have a layer for each coin series you'd still end up with a good 15 or so layers which will need to 'house' coins and bars of varying thickness. The result would be a very very very wide and untidy looking album.