There is merit to the theory of reducing points spent on troops, especially when we are not governed by point requirements in specific
FOC slots like
WHFB is.
C:
SM did it for the longest time paying the minimum "
tac tax" and there is an article similar to this idea on 3++ is the New Black here:
http://www.belloflostsouls.net/2013/02/40k-maximum-threat-overload-and-chaos.html
The article talks about armies that spend as little as possible on troops, with
CSM being able to field 6 scoring squads at only 200-300 points, giving them 1200+ points to spend on units that the opponent cannot ignore in favor of hunting down your weak troops.
It also bears mentioning that certain tournaments over-emphasize scoring as many
VP as possible in favor of eking wins by narrow margins and objectives are the easiest way to do this.