It would help in both saving our guys lives and discouraging the bad guys.
It is foolish that we gave up the weapon. War is hell. The more gruesome and violent it is, the less people will do it.
“The day when two army corps can annihilate each other in one second, all civilized nations, it is to be hoped, will recoil from war and discharge their troops.”
- Alfred Nobel
It was a very worthwhile weapon. It carried about 9-10 seconds of fuel per loading and you could shoot gasoline (large billowing flame, about 20m range ), diesel (longer stream of flame, lots of thick black smoke), or napalm (very long stream - 35m or so - sticks to the target).
For screening troops to cross streets under fire, nothing better. For suppressing machine gun positions, superb. You could even deflect the flame around corners with some practice.
Good for making Jihadis re-think their career objectives.