I agree on Rocket Launchers. I once rolled a Void Exodus Plan, which had 2 shells, tracking and clown cartridge. It was RNG and a good launcher but it had mediocre Blast Radius. I always felt I a bit lacking because of this. I later got Truth which was good, but not a vast improvement in PvE. Hezen was okay, but had no tracking.
Then I got _that_ weapon. And it was basically that, or Hezen when I needed an exotic elsewhere. Didn't get HoC until last Feb or so. Which yet again, is Solar.
There isn't much choice in the RL class. Bungie dropped the ball on Dragon's Breath. Its again Solar and it has way too shitty velocity to be considered usable. Low velocity + no tracking is avoid.