My thoughts too
Hatfield squats, i like them. Havent really trained them enough to know if they have carry over to my squat, but when i have done them ive enjoyed the movement, felt it in all the right places
Also... totally antidotle, but my comp becnh always goes up when i do sling shot, so i think there is something to overload work and hatfield squats you can really load them up so i think the same could apply to lower body work
I quess it depends what adaptation you're looking for. If its just hypertrophy though i think there are better options.