[Suggestion]: Option to set world changing events to occur on a regular basis

I have played many games with epic events cranked way up and haven't had one happen in a long time, I had 2-3 in late beta, but not since...

I would like a frequency option on game setup to have a world changing event happen every fifty turns or so.  Make it +\- 5 turns to make it a little unpredictable.  Call it Path of the Comet or something to reflect the cyclical nature of it.  Just to make things really unpredictable.

Thanks!