The arguments about fault lines was hotly contested in IPSC/USPSA in the old days too. When IDPA is criticized for claiming to be defensive oriented and having some training value in the real world, well that is exactly how IPSC/USPSA was promoted back in the day. That issue is a large part of the split between IPSC and USPSA, as crazy as it sounds the International crowd those mostly prohibited from even taking a pistol home with them, wanted to keep the "realism" in the sport while the majority of shooters in the US started seeing it as more of a competition. A lot of the dumb rules we've put up with have been the result of making compromises between the "realists" and the "gamers".
I've always felt like if you keep score everything becomes a game, games have competitors and competitors will do everything allowed to get the best score, "real gunfightin" tactics be damned. So trying to make a public competition out of tactical training doesn't really work. On the other hand there are many valuable skills and techniques best learned in competition which is why the best face shooters also dip their toes in the competition world. IMO USPSA is best when maintaining a safe, FAIR, competitive environment while allowing for the development of equipment. Just admit we are mainly a sport but one that develops the best techniques and equipment for high speed gun handling.