Im just saying that everything a mod does is basefile modification through Forge, so your argument for rejecting mirrors was weak and lame, like the mirror idea itself.
Also futuristic Laser Tech could heavily use mirror so they can be made industrial enough.
It's impossible indeed.
Wrong... Kinda.
The mirror itself can become a light source when it has direct view from the sky (Using the same clearviewtothesky watchamacallit that solar panel uses), but making that light to have the property of sunlight its something that i dont think its possible (Yet)