for me, I wish the Law allowed a little bit of discretion in a PT.
Just sometimes there are occasions when a YC seems wrong. I had one this season where a defender playing only her second ever game clumsily caught an attacker high as she went for a try. It was all very slow, unintentional and very low impact and caused no excitement at all - but alas it did cause the ball carrier to lose possession as she went over the line.
I gave a PT but omitted to YC. In the context of that particular game, and that player, it felt right.
Although, obv, it was also wrong.