Yes, believe it or not chassis engineers actually design the car to run at the factory ride height. If some aspect of your driving is nonstandard (maybe you run only on smooth pavement, or you have modified the wheel/tire package, or you've altered the curb weight such as by never taking rear seat passengers), then you might need to alter the suspension to match. A lowered car might give you less overall grip but faster transient response (turn-in).
As I said, I really like the stock wrx suspension. It just needs lower profile tires (205/50R16 or 215/40R17) to make it work on the street. Perhaps a *tad* shorter spring would be good as well (but keeping the overall rate about the same).