To reduce lag, especially on scourge.
Make production entities, like Furnaces(all kinds), refineries, and even power production(Windmills are a huge load-in lag entity), stackable like the PJ's. Would probably reduce a lot of lag, and also make some bases more compact. Because having to load 200-500 electric furnaces at some locations, and the server side math that has to take place for them, probably causes some issues in the end. Maybe 5 stacks for power, and 10 stack for furnace/refinery.