I think we may have drifted a bit from the OP at this point ... I can just give my recent experience, which was nowhere near as severe as the story mentioned in the first post.
I broke my hand skiing at Breck 2 weeks ago. I got an x-ray at the base of quicksilver lift to confirm the injury. Smart?? to dedicate that valuable real estate to a clinic so close to the beginner area.
I told the clinic I broke it skiing. There were no follow up questions about 'what trail was this' or anything like that to have my injury help patrol mark runs if needed. I could overhear other people in the clinic. Clinic didn't care where injuries happened, they just wanted to treat the injuries and help the people.
In retrospect I should have called patrol and reported where I found thin cover and have them maybe mark the spot if appropriate with a pole or whatever to show a buried rock. A few days had passed since then and it would have been moot at that point - spring variable conditions and all. This idea of describing verbally where to go to find the mischievous rock sounds like a fools errand... so...
Anyway, it seemed like low hanging fruit for Vail to have someone in that clinic recording where these injuries happened and relaying the info to ski patrol to check conditions. Not everyone immediately calls patrol when something happens. Most I know will find a way to ski down in pain and get it checked later if it's still a problem.
Or maybe this has been tried in the past and it yields no useful data?
As a counterpoint, I'm pretty sure the patch of rocks where @SkiNurse broke her liver has been roped off by Snowmass since that day. At least it has been every time I've been past there (which is not a scientific data point, of course). I witnessed a crazy accident at Copper earlier this season where there is now more fencing and signage, and I was told that they groomed down the lip at the edge of the run (where the skier became airborne) the very next day. I don't know if they have continued doing so. That said, these were much more serious injuries than a broken hand.