They didn't go with it initially. Their first reaction was altering utsusemi to lower enmity with each shadow lost. They 100% did not want ninjas to be tanks and for the longest time I HATED having ninjas tanking cuz they couldn't hold threat at all. Obviously over the course of a few years they gave up, but initially they had no intention of going along with that. With that said, I don't disagree with you. Players take the potential of something and run with it, which is why I love MMO's.