That's an interesting point about disasters. I had kept it at the default value but I did not realize that Meteor Showers count as disasters too and increase in frequency at level 3 and 4. For some reason I thought they happen once per Era, but apparently this is not true and it sure is a great boost when you find one of these. I will bump it to 3 next game I think to increase the yields but avoid upping the odds of the worst droughts/hurricanes/tornados. Man, in the game I quit due to my Hercules error, I had just upgraded two Man-at-Arms in a captured city and both got redlined by a Tornado right as I moved them to attack the next city. Slowed me down a great deal.
My current game I have activated Apocalypse to be able to fertilize woods activly. It is a gamble, but it might be worth it. Another benefit is that you have more volcanic tiles for Rapa Nui. But ofc a proper disaster can also ruin the game if it takes out your space port city, so maybe not such a good idea...