The forthcoming General skills will be introducing a skill system more complex than the currently existing science skills, this mean the chances of the uninformed making mistakes is far greater than before. The existing system to remove books is a all or nothing system which means proportionally it is a lot more expensive for newer players than well established ones.
I suggest that we should be able to remove a single book at a gem percentage cost of the full removal. e.g if you have 10 books invested it costs 10%, 20 books invested 5%.