in general i can't say i agree they were wasted they served their purpose rather well. They were suppose to be the likable followers that the big bad could kill to make you hate him. if you could just say meh i don;t care that they died then they would of been a waste.
Personally I found them completely uninteresting and didn't care one bit when they were killed off. So they were really a waste of time more than anything else(unlike Xalek who is a waste of space on my SI's ship).