In term of roleplaying, I think we should be able to banish settlers. For story reasons, I can understand you can't banish essential NPCs like Beth and Jerry, but we should be able to banish random settlers just for freedom of choice. It's like maybe our characters are against ghouls, so they want to banish ghouls from their settlement or maybe we just suspect someone for being a synth, we should be able to banish them.


. I only think that if you do it in a MM settlement, the MM should not be happy about it. It does not go well with their policy (if they send me to help ghouls and then agree to banish them). And also if you tried to banish original pre-existed settlers, who allowed you to use their workshop, I think they would go mad at you and banish you .
I mean from the RP point of view