Starcraft 2 is a vast improvement over brood war because it solved a bunch of problems bw had with control. for example units have shit pathing so you follow them and micromanage their movement. sc2 fixing pathing entirely is a solution to a problem but also a removal of something brood war players enjoy doing.
Is the key to making a perfect rts balancing how much stupid micro a player must do, or can do? most rts following sc2 have made the formula simpler or easier in some way, like pacing or the control you have over what materials you mine.