The problem is people and RNG, not the gjallarhorn. You're not gonna stop people from being dicks by punishing them and taking their toys away. They're just gonna find something else to be dicks about. I'm with the other posters here saying that nerfing the best PvE rocket because, essentially, you don't personally have one, is misguided. The better solution: build your own LFG group so you're the one calling the shots. Go ahead and require the gally to compensate for your lack of having one if you want!