Stark is basically arguing in favor of moral relativism, according to which the Avakonians are wrong in judging the "Earthies" and they ought to just deal with the way they live even if they strongly disagree with it. But the Avakonians feel they must do something because they feel a kinship to the Earthies, because they are human as well. I don't know anything about you, but for the sake of discussion, I'm going to assume you're an American. Here, we have our own culture and norms. People in North Korea grew up on a completely different country with different social norms and cultural practices. And, there is strong evidence that the people living there are subjected to torture and otherwise treated poorly by their own Government and its supporters. Yet, I assume you accept those people are also human, even though they're from a different country with different social norms, right? If you do, then the question becomes this: Do you do nothing and just say "Well, I guess it's their own country, and their business, so we'll just leave them alone and tolerate it" or would you say "That's not right, what they're doing is wrong, and something must be done". That's what the Avakonians are doing. The constant human violence on Earth is not something the Avakonians will tolerate, and so they are trying to do something. The irony is that, in the famous words of Nietzsche, in attempting to fight monsters, they are in grave danger of becoming monsters themselves. It supposed to show that even a highly civillized society like Avakon still holds deeply rooted flaws that occasionally threaten to be dragged out into the light of day. You MUST (I cannot stress this enough) remember that the Avakonians are not perfect. They are people, and, just like us "Earthies", their emotions get the better of them.

Naturally, I disagree with Bradley being bland (except maybe in the case of The New Frontier, since he was more of a secondary character there). He, Arell, and Colonel Stark are the three main characters right now, with the rest of them, indeed, being more support. Right now, there is a grave tension between Arell and Stark and a sort of awkward reunion between her and Bradley, whom she imprisoned in the first story. If Bradley was bland, I expect there wouldn't be reviewers wondering what path his relationship with Arell is going to take. But, to each his own, I suppose.