Thank you for all your ideas!
I am going to change the default template to:
[abrt] <component>: <function>(): <executable> killed by
- do not drop <component> because some email clients cannot display
custom headers in "index"
- drop VR from <component> because Ales Kozumplik is the only one who
wants it (VR is always available in comment #0)
- drop "Process", "/full/path/to/executable" and "signal"
- <function> must be prefix of '<executable> killed by
because 'killed by' message is generated while coredumping and
unfortunately <function> is not known at that time