Omg, I actually started making a mod like this yesterday. I checked a few weeks ago and there was no such mod, so I thought I could probably make it (I am a web developer, but never made a Factorio mod).
I didn't actually come up with this idea myself. I saw it on Twitter just before Space Age came out. Somebody joked this would be a fun mod. Might have been Bentham (MangledPork).
Just figured I'd share this funny coincidence.
I'll test yours after I finish mine. I want to learn to mod Factorio, and I don't want to look up the answers ;)