if i remember well, for BG 1, 2 and expansion, "black isle" was there too.. . So you had a great story in these game.
Bioware made alone NWN and you have a very short and not original story, but a nice game engine.
Sorry but Bioware know how to make game in term of game engine.
obsidian => some old devs from "black isle".
For a KOTOR 3 i am agree with another post here : BIOWARE and OBSIDIAN, not only one of them