[Suggestion] 'Inactive mode' for buildings.

When building a town in the game currently, it's almost impossible to not build redundant/unnecessary buildings.
The reasons are variant, upgrading research buildings, protecting your country or just to have it when the need comes, to name a few.
That being said(Or written), as the game is right now, there is a great penalty within the game for doing so, mainly construction time increase but, low food production as well, which is fine for buildings that are useful for you, but hardy seems fair for ones not used.

So I suggest to have a way to deactivate/turn off a building for a period of time, rendering it entirely useless even  for the most basic use (for example using upgrades already built in a forge), with a cool down on reactivating it after deactivating so you can't abuse it to have less consequences for useful buildings.
In addition I would suggest not to make the cool down too severe so you could reactivate a defense/army building on time before an attack is arriving.

Idea is good, but I think it should be possible for unit/upgrade production only.

For example hut of brave, that's required for towers but not very useful after you get classical units.

Or blacksmith after all classical units are ready. Not sure what should penalty for that skill be.

Idea is good, but I think it should be possible for unit/upgrade production only.

For example hut of brave, that's required for towers but not very useful after you get classical units.

Or blacksmith after all classical units are ready. Not sure what should penalty for that skill be.

It could prove Ideal for a coliseum, that you need if you want to repair/upgrade your library as an example.
And there are many more buildings required by others that are not always useful for the player.

I also like the idea, especially for buildings you only build becourse they are needed for other, more important buildings.