Elixir C was taken as a tradeoff for Elixir U, which is a good DPS elixir. What you get with Elixir C is not one, but two condition removers on 30 second cooldowns.
But what you also get is added DPS. For each boon you have, you get +1% damage. You wait until some shmuck stacks a bunch of conditions on you, and then you use Elixir C to get a ton of boons, and additional damage.
The Flamethrower is a good tradeoff though, as the stats you run this build with complement the Kit, the kit comes with additional burns and Incendiary Ammo, and you get all sorts of nice tricks like a blowback and another blind. Not to mention the Might. You just sort of have to run with 409 for something like that, because one condition remover seems like it wouldn’t be enough.
I actually throw Flamethrower onto this build, swap the traits around and get Energized Armor instead of Kit Refinement when I feel like using it. In that case I’m inclined to lose Elixir S but keep Elixir C, though. In that setup you lose your stun-breaker… but you can use Smoke Vent while stunned for some added defense. And since you have multiple condition removals at that point, you can keep your Elixir duration increase, or get Kit Refinement or something if you want to be beefier.
If you did want to dedicate the build to Flamethrower, Kit Refinement might be a fine choice, because I think you can swap kits while stunned, offering another potential stun-breaker.
