I can imagine now people struggle with felpuppies and a so called " NERF " would solve their problem , how about come back later on when more and better gear is obtained , into a lvl that felpuppies are getting a single chaos bolt and they're already at execution -20% to be shadowburned.
That's gonna be the actual and real "Nerf" for this encounter , Blizz stated that they gonna make it so you can see who has green fire and means they got something unique , like challenge modes.... not the other way around where everybody runs with green fire and the normal orange-yellow-ish fire is the rare one :P