What is the background of your idea? Why did you code this mod? I also recommend this mod in this context https://mods.factorio.com/mod/ResearchLevelSetsEvolution

I was playing with biters for the first time and I found them getting too difficult too quickly so I searched for a method to decrease the rate of evolution without making them easier (by setting evolution_factor).

I tend to stay in the early game way too long so this gives me some peace of mind ;)

Very interesting mod, I might look into using yours instead for my next world instead haha

You can switch also during a running session. No need to wait.

For some people your approach might also be useful if the standard configuration options regarding evolution is not sufficient and they want some extreme values.