The ability to define our own modifier effects.
https://lua-api.factorio.com/latest/Con ... l#Modifier
e.g., add a modifier to non artillery turret range, some entities health, grenade / atomic bomb radius, or something else fun!
Custom modifiers
Re: Custom modifiers
I'm an admin over at https://wiki.factorio.com. Feel free to contact me if there's anything wrong (or right) with it.