well Horred the PLague (and his team) is one of the most hardworking modders I know. He released Big Picture, which is a combination of Darkest Day, Shadows over Soubar and Tortured Souls and some others i cant remember.
These are the major mods in the BG2 community, and are all very good. The only big problem with balance is that you can have upwards of 200k gold before chapter 3!
Furthermore, Horred recently realeased BP-NeJ (Never Ending Journey) which adds in another mod. This one is still quite buggy and I havent played it yet.
Even better, he just last week released BP-BGT (Bladurs Gate trilogy) and BP-BGT-NeJ. I havent played these yet either as I dont have Tales of the Sword Coast. The baldurs gate trilogy incorporates all of BG1 and TotSC into BG2. As you can imagine, the mixture of these three mods creates a completely different game.
Be warned, as the BP-BGTs have been described as Alpha versions, and need a lot more testing and scripting, but they ARE avaialable to play.
Of course you can just get BGT itself. It creates a better roleplay game ( in my opinion) as you can play the classes and races that arent in BG1 originally.
After reading through this, I realise that it seems like im just advertising, but I really do think these mods are worth getting, on your 3rd or 4th game. They create a totally new experience, and the authors have endeavoured to create balance in their new classes and quests/rewards. As i say the only balance problem i have so far had is too much money.
The
Big Picture Website
The
Big Picture discussion board
The
BP-BGT(NeJ) Thread