People keep talking about how masterful the previous acts were but to me it was just "okay" maybe its all the other rpgs I've played and I have nostalgic rose tinted specs on but I didn't feel any kind of strong connection to any of the characters, I became a bit invested with shadowheart and trying to bring her to the light side, fixing karlach and helping gale (I started losing interest in his character when I realised he was just a power hungry wizard really). It was definitely more of a game to me. Perhaps its because the progression felt like more of a quest list to me rather than organic and free roaming. Maybe it was the strong advances of some of the characters from the first meeting or maybe it was the hype (which I tried to avoid) which has made me feel this way.
Halsin I couldn't really give a toss about, he kept smiling at me weirdly...
Wyll was kind of interesting but less so than the other characters, I didn't have the space in my party to explore his story fully but I did randomly take him along to progress his quest line so I found out about his background etc.
Lae'zel grew on me for sure, but considering her race has existed for so long and they traverse various dimensions I would have thought she would be more intelligent.
Didn't get to meet Minthara because she aggroed in the goblin camp when I was clearing it so I had to kill her. I had no idea she would be a companion until seeing people mention it in various threads.
Minsc I haven't met yet but from what I've read they severely cut and pasted his storyline quite a bit.
Astarion just annoyed me from the get go so I kind of ignored him half way through act 1, I gave him a little attention here and there but I just could not be bothered with him.