Something similar seems to have happened in sport fencing. The style of fencing in the 19th and early 20th century is now known as "classical fencing". It was practiced as a sport but also as a preparation for duels, so the techniques had to be useful in a fight with sharp weapons. Wikipedia[1] says
> Scoring was done by means of four judges who determined if a hit was made. Two side judges stood behind and to the side of each fencer, and watched for hits made by that fencer on the opponent's target. ... There also were problems with bias: well-known fencers were often given the benefit of mistakes (so-called "reputation touches"), and in some cases there was outright cheating.
Then in the 1930s, electrical scoring was introduced. This is objective, but it led a big change in style, because now you could score by just touching your opponent, even if such a light attack would be ineffective in a real fight.
By contrast, kendo never introduced electrical scoring, and still uses human judges. A judge can refuse to award a point if an attack connected but didn't have enough force behind it---this avoids rewarding techniques that would not work in combat. So kendo is maybe closer to actual sword fighting, but on the other hand e.g. Neal Stephenson in Snow Crash makes fun of the subjectivity:
> As in fencing, you're not allowed to kick your opponent in the kneecaps or break a chair over his head. And the judging is totally subjective. In kendo, you can get a good solid hit on your opponent and still not get credit for it, because the judges feel you didn't possess the right amount of zanshin.
I guess the corresponding thing in debate club would be to give more discretion to the judges, so they wouldn't award a point if there was insufficient follow-through...