I would like to suggest an option that allows you to set the duration of a building to work for.

Mainly this is to help maximize efficiency and building buffs.

For example:

I have a coinage and I would like it to work for 12 hours. I apply a buff for 12 hours. It knows to stop working after 12 hours so that I dont waste my gold bars.

Another example. Gold Mines. (its at level 5). I want it to stop working at a certain time so that it does not collapse while I'm a sleep. I hate having to setup my alarm clock and wake up in the middle of the night just to click on stop production and go back to sleep so I dont waste buffs, etc or waste collapsing.

For players, please like this post and comment so developers can see this as a much needed feature!