Hi,
First off, I love this mod. It really is how evolution should work.

That said, I can't quiiiiite configure it the way I want to. See, my ideal would be to set healthily absorbed pollution to 0, and instead set a negative time factor. So that I'm not rewarded for polluting in ways that doesn't cause problems, I'm just not punished; but also things cool off over time, if I don't cause more problems.

If I set the healthily absorbed pollution to a negative number, even -1, the way I play it tends to keep evolution at zero all the time. Which isn't really what I want.

Anyway, the vanilla time factor can't be set negative. So I was just wondering if you could apply a patch to change that? Either to override the interface so it can be negative, or just provide a custom time factor that can.

Making a custum tume factor that handles negative values sounds doable and not that hard. I'm not actively playing the game right now so don't count on a quick fix anyways ;)
Though it isn't impossible...

I have to second I love the idea of a negative time factor.