Oh well, you finally got a point, there are no FA right now, weekly harvest time hasn't started yet. I think FAs are put on the TL every week, it's probably a typo in your post.
BB is a living dynamic universe. You do as you wish. BB universe should have a life of its own, going whichever direction users lead it. If we all train a lot of centers, there will be a lot of centers in the game. Then a lot of us sniffing the opportunity will train a lot of guards. There will always be imbalances at one point, the aim is not to prevent it, it is impossible or would be too restrictive, the aim is that the system is coherent enough that imbalances correct themselves with time. An outside intervention is required only in the case of imbalances endangering the system. Not the case at the moment. Some big Cs are going for cheap, that itself is the first correction.