No need for stance and grip adjustments as those are just the golfer's way of moving the point of impact and the angle of the club face (relative to the radius of the ball) at the point of impact.
One dot won't do it, however, as that just sets the point of impact. Adding a crosshair would allow the player to also change the angle of the club face at impact, thus producing true shot shaping.
The crosshair could either be added at the ball (where the dot is) or incorporated into the ding line.
I suspect the WGT physics operates only vertically with the horizontal component for wind merely added to the landing point, as determined by some formula. If so, they would need to add horizontal physics (which almost all golf simulators do), since side spin tilts the magnus effect.