I must say, each time I play through this excellent game, there are things that remain unseen for my eyes with my previous parties. There are some very little, but extremely well planned and interesting things in BG2-ToB if one is able to notice them.
For example on my last run-through, while I was fighting (the tougher) Yaga Shura, I payed much more attention to smaller details like the communication between the members of Yaga's army. Man, this was great! One of the soldiers was severely wounded, and cried for healing. Normally, if a Cleric of Talos is nearby, she casts a healing spell, but in this case he was alone with two other average soldiers, a Fire Ginat, and a Yaga Shura Officer. And guess what? The officer was saying: "here, catch!", then the soldier: "got it"... and to my greatest surprise he got a Potion of Superior Healing from the officer, and used it right on the spot

I must say, I was totally impressed! B)
This is what I call in-depth detail. No doubt: BG is an excellent game, and it is getting more and more better.
Thanks for any modders and faithful fans out there!
TGM