i agree
certainly in the scheme of things, to turn around train SB on your guards for - lets say best case scenario they both have respectable SB - train them for what, 8 weeks over the course of 2 seasons, just to get maybe 3 pops. such that they have Prominent SB - Is there a point to it?
The main question is, is there a measurable point to it.
The other unknown, is that maybe the secret to BB in general, not just 2-3 zone, is SB on guards. Maybe the impact of even moderate SB on guards is massive.
Pretty hard to measure. it also makes assumptions about how the game engine works. If a guard opposing a 3-point shot is still going to use SB to alter the shot after the opposition is going to take it, then logically, higher SB = reduction in opposition FG%.
but like i said, that starts to make assumptions about how the game engine works.