Hey Mike, first of all just watched through the entirety of your 100% evo start and ultimate deathworld videos in the last few days lol, great stuff, absolutely hooked.

I was wanting to start a game with ~20% evolution (among other scary biter mods that only kick in with a little evo) and this is the only mod I seem able to find. Would you be able to add a startup option to this so we can set a custom evo?

In the meantime I'll probably just rip into the mod and change the hardcoded value, so don't feel obliged on my account of course.

A very timely response, but anyway... Rip and Tear into the mod yourself is the way to go, I barely know any coding, I don't know how to do that (I even had help "coding" this one line of mod lol)

A twice as timely response! But anyway- I did exactly that just now, and if you want you can just pull this and upload it as a new version of this mod.
https://github.com/BinaryElement/100pcevostart_2.0.1

For anyone else who just wants to play with it before then, you should be able to just 1) download the repo as a zip, 2) unzip it, 3) remove "-main" from the folder name, and 4) put that folder in your mods folder.