My counter arguement would be that the only times I have been killed by KS is when they flew or drove through me from behind and I did not know they were doing so.
Lack of SA. You should have been watching out more.
Kinda sucks to be placing a shot and some hero flys straight through you to try and grab a kill.
Yeah, it sucks. But that's life.
If you couldn't shoot the target down yourself, and enter a chase which soon everybody wants to take part in, then its effectively a failure on your part - especially if your plane is not very good in harsh maneuvering. Can't really blame someone else for jumping into the fight, since you couldn't shoot him down first.
Since we make the gamey compromise of no friendly collisions how about granting the benefit of the doubt to the killshooter that the hits were not intend nor particulary their fault.
Which is the lesser of two evils?
a) a killshooter, which occasionally frustrates people, but very effective in preventing trigger happiness in regards to hordes of friendlies spraying over your shoulders like mad.
b) a system that has a light/indirect punishment for shooting at friendlies, which people will be less frustrated in the unlikely event of true accidental shootings, but in overall effectiveness, will encourgae people to spray like mad to gain a kill, since they have no worries of being damaged or killed for doing something like that.
I'd go for a).