When Blake published his second book, GTTB, influenced by J. H. Taylor, he had switched from a square stance with toes turned toward the target to a 40-45 degree open stance with left foot drawn well back from the target line and pointing almost at the target. Right foot was turned slightly toward the target. Mindy believed that an open stance was the final and necessary element of his reflex swing. He had written me about this change in 1977 but I didn't actually see a copy of GTTB until the 1990s. I think he was also influenced by Lee Trevino, the consummate ball striker, whom he greatly admired. When Trevino was in his prime and winning several majors (I personally watched him beat Jack Nicklaus and Tony Jacklin in the 1972 British Open), television announcers would often comment on Lee's quirky open stance. I remember hearing, numerous times, that an open stance was a radical idea that somehow worked for Trevino, but no amateur golfer should try this truly bizarre concept. Paul Azinger used a slightly open stance when he was having his greatest success (coached by John Redman whose ideas bore some similarity to Blake's). At address, Richard Wax's stance looks much like Trevino's. My thinking is that more golfers should give the open stance a trial. This may be one of Mindy's ideas which could work for some golfers, even if they are not using Blake's leg-power concept. Snakedoc
I think you are absolutely right about people giving the open stance a try.
It was having good success (relative to what I've had previously) with the open stance that lead me to do some research and eventually stumble upon Mindy Blake and this forum.
I spent some time in the mirror comparing my swing with a square and an open stance. The main difference I find is that my head position is a LOT more consistent. With a square stance, it tends to drift towards the target or forward towards the ball.
So while I hit the ball (marginally) shorter with an open stance, my contact is far more CONSISTENT and REPEATABLE, and a feel that my distance is steadily improving too as I make the transition.