It really depends on what 1 bad apple is, that it is someone that is not the most productive but is still productive and don't completely harm whatever they work is seems too much but often that is the meaning in use.
I've had this problem when it's time to adjust headcount (smaller, or trying to swap people out to get more done).
I'll keep the Eeyore person that self selects tasks and issues that are of low complexity (say, 2 on a 5 scale) than the self confident idiot who keeps asking for 4/5 stories when they're really only good at 3/5 on a good day.
That jerk is creating 5/5 stories that I have to burn myself out on (they are either notably quiet or loudly in denial when this happens). I don't care how much project management or the marketing guys like him, even an empty desk would be better. At least an empty desk is predictable.
