Seeing the lack of offensive Shiny options, the only obvious winner from them would be a vit Dekan (his damage is not affected by DD) and the losers would be dex Guardians and agi Dhans. I can see it being useful to others in regards to reducing the overall damage, but it would further enforce the Damage Drop route and reduce variety, because the other options such as crit aren't very good. Then again, people opt for DD anyway because even on Adorned version level it is better than other option types, and the crit classes were doomed to begin with, so perhaps the introduction of Shiny stones is not so bad.