Astarion approves of torturing the captive, murdering the grove and gets inspired when convincing the spiders to feed on goblins. He also approved of all the evil choices I made. He doesn't grow organically into a "good" character, because no matter what he experienced and what you told him he still wants to ascend and you have to persuade him to abandon his ambitions. His "redemption" path is terrible, and I hope Minthara doesn't end up the same way as he did - losing all of his fun traits - brassy and cynical sense of humour, temerity and sexual kinks right after making the big decision. At this point I'd rather she just got an extensive questline but without branching paths, like Halsin did. You just help with Thaniel and the shadow curse or fail and that's it. No personality changes, or more like the erasure of it, for Minthara, please.