Instead of just adding another DoT, I like the idea of flamethrower dealing additional damage if bio blaster is already applied. Although, if the potency is too high then you'll end up doing the combo over using drill against single target.

I just want them to increase the potency so that it's the strongest skill to use after bio blaster is on cooldown. Also, allow us to move when channeling it since it seems to come with a built in Provoke for enemy AoE. PvP has shown that it's possible to have abilities that can be channeled while moving, so they can incorporate that in PvE scenarios as well. And let it generate like 5 heat per second; we are shooting fire, you know.