I find it silly that one must be forced to a build order, or at least something very similar to it. The game should be designed so that you may mix up your build combinations and do things very differently - not rely on one optimal army selection.
Actually, it is exactly people rely on that one "alpha" build and never even try to adapt is why we have so many balance thread.
People for some unknown reason expect one single BO to work every time, against all armies, against all their different BOs and if it doesn't, its obviously a balance issue of other side being OP, not their denial to adapt to opponent.