In previous releases I have created build limits on individual units but I have not been successful with a total population cap until now. The new system will overhaul the power system and merge it with a pop cap system (an idea I came up with after reviewing mods like RA3D and Mideast Crisis 2). Every unit and defense structure in Red Alert 3: Just Rules will require supplies (RA3 power but think SC terrain depots). The unit function and tier will determine the amount needed and a cap on Depots (power plants) will determine the total. When the population exceeds the demand defenses will power down, production of new units and upgrades will be placed on hold and some units may even be effected causing lower speeds and firing rates.
The new power feature will open a bunch of new gameplay opportunities with the possibility of DoW/CoH style fights over supply points and/or supply tech buildings (in place of power plants). I will how ever need the help of some skilled map designers to make that a reality.