The problem with a rule like this is it can often backfire because it doesn't take into account how coaches will react.
Coaches will ill try to change tactics to get around this, one must know that when creating the rule. If you can't kick it out of bounds (illegal), and you can't kick it in the air (fair catch), then the only other option is to kick it on the ground. Teams will try to experiment with hard, directed squib kicks. They have to, you've taken away any other option.
From a safety aspect, you'd rather the predictable kick being caught near the goal line rather than the chaos of a squib. I understand what they're trying to do, but I'm not sure this is the answer.
Coaches will ill try to change tactics to get around this, one must know that when creating the rule. If you can't kick it out of bounds (illegal), and you can't kick it in the air (fair catch), then the only other option is to kick it on the ground. Teams will try to experiment with hard, directed squib kicks. They have to, you've taken away any other option.
From a safety aspect, you'd rather the predictable kick being caught near the goal line rather than the chaos of a squib. I understand what they're trying to do, but I'm not sure this is the answer.