I don't think I've ever seen someone use hard light in pvp. You an pretty much guarantee that someone at the top of the scoreboard every game will be using thorn. That screams weapon imbalance. Don't get me wrong, I have thorn and can do great with it (not that hard) but I can also win a game with my Stranger's Rifle and Praedyth's Revenge. It's simply too easy to do well with thorn and most people have it nowadays because people figured out how to boost and cheat the bounty. Certainly worthy of a nerf.