Job is pretty much complete at 82 IMO. I'm leveling it and I find myself using the Shotgun in even ST rotations if I'm 10 or 20 heat off from a Hypercharge so I can do my 9 hit wonders more.

I can't say Flamethrower is ever impactful if it's more beneficial to use Scatter for heat or Crossbow for damage IMO. Just feels bad unless you pair it with Bioblaster and even then Scatter/Crossbow would be better.