Regardless of how it is narrated the stormtroopers in the case I described did as much damage as a result of their own actions as the PC did as a result of theirs. In fact the stormtroopers own action has the same effect mechanically as turning a blaster pistol on themselves. The very fact that strain causes as much damage as threat rolled and bypasses soak, you would be better off forcing the stormtrooper through checks for skills they don't have as this will cause more DMG to them than some of the better blaster rifles.
Sounds like good tactics to me. "****, our little blaster pistols barely do anything to their armor! Let's lead them through this deadly swamp/heavy traffic/droid factory and let their own screwups take them out!"
Any with own screwups you mean occasional throwing them down into chasm when they attack you, leading them into flying through an asteroid field or making them do complex jumps or simply decide to break the chase. I think I saw all those a series of movies, if I just could remember the name of the series.
scnr. But yeah, I agree, it good old cinematic, narrative style to show how badass the character are when they deal with environmental problems which kill lesser people downright. The chances of survival are …