Reddit: The books from Savage have started to become a clutter on player inventories. Is there any plans to add these to a currency tab similar to beast tribe currencies?
Naoki Yoshida: Adding new items to the currency menu is not something I want to do without proper consideration, and books from past raid tiers have very little practical value. I'm sorry to deliver this answer, but I’d prefer players to just discard them.
On a more serious note, currency items clutter up character data, and
if we create currency data for each item, it would further increase the amount of data transfer required, which may cause latency issues.
I totally understand these might have sentimental value and it's hard to just throw them away, but if you could please just keep the books from the latest raid and get rid of the past ones...