The only one i truly can't stand is Astarion. Hell, i can even see the damaged person thing going on, but how am i supposed to care about the far-off redemption arc when the only way to access it is by being as much of a stupid evil sob as he is? Compare to SH and Lae'zel, but mostly SH, whose approval can go up even by being the 'good guy'. That much, if nothing else, at least speaks of layers. The guy only wants every evil choice, usually stupid ones, hates any kind of good choice, usually sensible ones, and just whines and bitches a whole playthrough if one doesn't roll that way.
Well, you can play an evil character. In that case, redemption isn't an issue. Sensible/not sensible still is, of course.
I was more pointing out the fact that most people expect all of those characters to grow/mellow out, and yet the only way for Astarion's approval to grow is to be as stupidly evil as he is. Former doesn't make any sense with the latter.
I was thinking about that, too. I mean, we're not even sure if redemption arcs are going to happen though, right? It's only something people hope for, as far as I've seen? I think most of the evil-aligned companions in BG1 and 2 didn't have redemption arcs either (although one of them you can sway from evil to neutral, so it has happened). It seems to me like you have the ability to grow close to ex. Astarion and Lae'zel; the former responds positively when you're kind to him when he opens up to you, and so on.
But even with that, there is nothing that indicates that he/they will start caring about the greater good or become better people in general. Maybe the fact that they might have potential to care for the PC will spark some bigger change, and that'd lead to a sort-of redemtion arc (as in, they start to care about someone other than themselves or change their worldview a bit), but I just don't see either of them changing morals or becoming good people and I'm not sure I personally want that either, even though I'm all for character development and personal growth so long as it makes sense.