*cough* 4-pool? *cough* Meh. I've learnt most of the tricks in Starcraft, I just can't seem to do them. I can macro, but not micro. Ah well. However, can you lockdown 12 floating BC's with 12 Ghosts? I've tried, and I could only get 6.
As to the threefold complexity of STarcraft- yes, it is very complex, however, the fact that you have all of those different units makes it harder to balance than something that has all of the units similar. Kudos to Blizzard, though, for making the game more balanced than many a game that has all of same units, just with different names.