I live in Minnesota so for me this would result in going from 100,000 mosquitos in my backyard to 1,000,000 mosquitos and still no lightning bugs.Love this. Have you checked out Benjamin Vogt's Prairie Up. He's great! VERY opinionated, too, which I love.
I stopped mowing the back 20-30 feet of my yard last summer after I noticed a few fireflies. I also blow all of my leaves into that area. I have hundreds of fireflies this year.