Indeed Author has a trouble creating a meaningful characters, he's just like creating a new one but end up ditch them afterwards. I think I started to dislike new characters since the end of S2 especially S3. They are mostly just a cannon fodders or a filler in every arc. Now if you think about...
They alr
They already have info all they want from experience fighting in last station and at the prison. Yet the higher ups only drinking a coffe, they dont even using a cannon that much... in short its not efficient at