Not sure what you're trying to do. Do you want to slow down the rate at which Crafters produce things? Or are you talking about resource harvesters?
I just looked through a bunch of files but no luck on the starting units. Not seeing anything obvious. The Scout may be hard coded. I've run into this issue with over things like eras. If I find anything I'll let you know because now I'm curious.
Edit: Found it. There is a folder called NationStarterKits. Within that folder there is a file for each difficulty setting. Below is what you need to change:
.vUnits =
{
{ "unt_Scout", 1 },
},
},