Quote Originally Posted by era View Post
Difficult to make a broad assumption like that considering other variables play into the calculation such as libraries not being affected by BE. If you draft deeply / homespump through a long hostile where your BE starts to tank hard, the benefits from libraries outweigh other buildings that are subsequently affected by BE dropping.

It ultimately depends partly on what your overall BPA is, but also on where your province is within the kd, your role, and how your province is to be used.
You can make fair assumption though: Libraries is one of the most over-used buildings in the game. Not that its not a good building. It is. At times. But due to the fact that it's quite situational and almost only merited (perhaps save from on well pumped TMs) on basis of the kd meta game.