This mod is one of the best mods available it is a UI only mod so not everyone needs it. It automatically switches your mass fabs on and off when your energy storage gets above a set percentage. You may think that massfabs are completely useless and nobody should use them. But if you have a surplus of +400 power then 3 T2 massfabs costing 300 mass total can turn that wasted energy into +3 mass. Thats more efficient than a T2 mex!
link to mod
http://www.strategyinformer.com/pc/supr ... 18138.html