Since I'm pretty new to the game, I only know current SH. What exactly did they change? DId they make her nicer? Not that I notice much of that - I botched every check so far, so she basically doesn't talk to me. I don't think, she can ever become an Aerie , without a really drastic character change - not that I want an Aerie, she annoyed me so much in BG2. I had a real cleric problem there, because I didn't like Anomen and Aerie and Viconia didn't get along with my favorite fighters Mazzy and Keldorn.
And I'm ok with companions not all being nice or easy (but I want my best friend too - I'm thinking more of Varric from DA), I just think, they overdid it with SH insofar, that she doesn't talk at all to you, when you don't suceed in the dice rolls. I would maybe change that, it leaves too much to chance. I mean, I'm nearly done with my first playthrough and all I get from SH is 'Leave me alone', 'Don't talk to me' and 'Don't ask questions'. I don't need her whole life story, but I don't even know the basics, she is a very moody blank slate for me.
