One of the big frustrations with new monsters, is them not being classified into a book for quite a long time. Even though we can see they aren't doing Book Wars every time, it severely limits their capability.
So why not make a "Wildcard" book for these monsters. Meaning they can filter in ANY book until they are finally classified.
- It would improve their value while they are Boosted.
- It would let people be able to use them in Book Wars much earlier.
- It would diversify some of the fights while they are being classified.
- It would let people use them in Book Dungeons until classified.
- It would put emphasis on getting them classified faster, since the Wildcard assignment is significant.