[Fyron]

You might want to add some sort of built-in formula builder to help the less mathematically-inclined. It could include presets for all sorts of different effects, like exponential decay for diminishing returns. If you make the app do work for the modder, it will be a lot more useful than just being a "visual" editor, in my opinion.

Also, might want to have a way to move facilities around in the file, for better organization.