But I would agree with you that we haven't seen actual, unambiguous, widespread remorse yet. The question of the thread is "SHOULD Amazons be shown as remoseful?" I would say yes, they should, because showing complex, mixed, changing feelings would be more interesting than having the Amazons feel all one way about this stuff. And also because, for the reasons I mentioned in the above posts, it seems feasible that they would have some potential for remorse, which, even if it's only potential so far, may become active remorse once Diana (and perhaps some of her age peers, if they share her innocence) confront the guilty Amazons.
You might say that the Amazons seem incapable of remorse because we have heard Aleka make misandrist remarks and we have had some indications that her sentiments are widely shared. But again, I think misandry could easily be part of a rationalization. Few people want to say that "we raided some noble, good people." If you feel you have to raid someone, it's a lot easier to think of them as inferior and savage.