The Real Issue
Flamethrowers. An iconic weapon in NS2, however, at 30 res, it is the most expensive in the game. It also does the least DPS, and your average T1 skulk can solo a rine while under direct flamer fire.
We need to address this weapon. Personally, I see fire as a symbol of purging and cleansing, so why not have it do triple damage to infestation, double damage to structures? That would make it a useful close-range cleaning tool, more risky then GL but with a greater reward.