It wasn't just the death that was stupid, it was the whole characterization of the thing.
Chesire is on the team because Supervillians killed her daughter, and now she wants revenge by killing superheroes.
Tattoo Man, who in Final Crisis became a hero, is on the team because Supervillians killer his son and he wants revenge by killing superheroes.
Cinder, a new character, is on the team because she wants to kill the corrupt Church, so killing superheroes is the way to do that.
Osiris is on the team because killing superheroes will bring back his friends who have been turned to stone.
Yeah.
****ing horrible.