I am interested in this concept. How would you define a dirty play? Would you consider intent and how would you determine that? Would you include any infraction of the rules that resulted in an injury?
I'm a very casual hockey fan, so my knowledge of the details of any rule is limited at best.
In any high-contact sport, the distinction between a routine play and a dirty play is often tough to determine. I believe that intent is sometimes, but not always, rather obvious. Launching into another player, and especially launching high into the other player, as what happened in this case, is one of those obvious times imo. Sometimes it takes replay to clearly see that.
So rules covering 'potentially dangerous, high-injury possible' actions need to be somewhat simplified in order to cover most of the possible ground, but they'll never cover each and every possible situation. Good use of replay helps.
As in college football, the rules evolved a little to allow for a reversal of a penalty for hitting above the shoulders if replay showed otherwise. It's a good step toward a more common sense rule.
Same with hockey, imo.... use replay to help determine the final call. No penalty on that play was a mistake by the refs, imo.
I believe sports such as hockey and football can remain high-contact and therefore crowd-pleasing, while still legislating common sense into trying to eliminate the dangerous plays. Launching is a good start. We all witness plenty of great hits in every game that are clean and routine. Keeping players that much safer, and possibly lengthening careers, is a good byproduct of this approach.