Cities production only in certain turns

Ok, i have now an idea to be possibly implemented in scenario editor.

What about have the option to enable production in some cities only certain turns?

Let me explain a simple example: USSR's winter events to WWII.

Winter is every 8 turns, then, only each 6 turns we can produce the units in that city. I know that in the current editor there are a way to do this, so that imply repat the unit n times (for example, if u wish ur WWII to least 75 turns, u'll need 75/8= near 8 clones of the unit u want to be produced in that turns.

Yea, the more options the better. Not sure how complex the code would be though. Nice idea still.