Thinking about it, I dont know if this is worth purchasing at all for me. I mean, even after the bugs are fixed.
My issue is that I actually dont like using Bioware made NPCs. I dont care about their stories or the interactions - I am more of a powergamer. So, I make my own squad in a multiplayer game and then copy the save game over to the single player game.
Why? Because there are simply not enough NPCs to cover all of the possible parties I would want to create. Want a good fighter/thief? Not available in BG2 (not counting you know who, who dies mid way through the game). Want a ranger cleric? Nope. Want an assassin? Nope. Want a mage archer? Nope.
This means that, to me, the new content in the form of the new characters is wasted. Yes, I would like to play through their quests, but preferably not with them in my party. And I havent heard of any new quests in the game. And I dont know what improvements they have made to Throne of Bhaal, if any. That seriously needed a lot of work, it always felt so poor compared to Shadows of Amn.