From what I read so far online with a lot of googling is that

current bookshelves only have Serendia, Mediah and Balenos

knowledge for only the ecology category.

Can we get an improved version that adds all knowledge to it

that we have under the H-key?

I am fine with it being able to be bought for a higher price

then the current bookshelf but there should also be a craftable one

for f2p players 

Agree, they need to update the bookshelf mechanic to include newer areas.