I would very much prefer if skaven slaves and chaos cultists only granted 1 temp hp on ranged kill.
Maybe add +1 hp on melee hs to the hp on crit talent - it’s underutilized.
That said, a good flamer knows about the woes of his teammates. When I play Sienna with Flamer, they protect me so I can charge. So the least I can do is not blind them. I usually do a quick sweep over a wave to stagger them, then hold onto one area for a second, repeat. Allows the melee’s to attack risk-free.