[Weson102]

Your right. If this was implemented the strategy of the game would improve.

The program could be set as a percentage. For instance, If you had 9 facilities on the planet with a population of 90 million, each facility would be at a 10% production level.
The other factors happiness,etc. would then be factored into this equation.

Or it could be setup that the player could allocate population to the facilities depending on need. A selection of factors could be entered into this retraining, lack of productivity, population unhappiness, etc.