It's not that big of an issue. Destiny is a game with heavy tracking in almost all its abilities, part of the "feels good" aspect of the game. We could go 'round and 'round about op abilities of any guardian class. But that dance is getting old. Warlock stasis nades are a straight free kill on virtually every toss(if used correctly) Titans can just charge in and beat you to death with several varying abilities(if used correctly) Hunters knives are just the same, a great ability when used correctly. When you miss that knife, man it hurts. Learn the ability set/weapon meta and you will have a great time with them. Just because they some hunters have learned to use their abilities well doesn't mean it needs nerfing. I hate warlock freezing everything in sight, but they have learned what works and are using it, can't fault them for that. Just look for counters and stop standing still so much.