I agree Ayvah: true freedom isn't just letting you kill everyone and complete the game, but letting you kill no one. The latter is MUCH harder to implement well. You shouldn't be able to defeat the final boss with a charisma check, for example, but perhaps by careful scrutiny and examination throughout the game, judicious sneaking and non-combat solutions, you can acquire various clues into the final boss (and other bosses, for that matter) that will let you philosophize or lawyer your way out of combat :P. However, between all the origin stories and other factors, I could see that being insanely difficult to implement. A modest attempt at making most combat avoidable would be nice though, and I think Larian is very much heading in that direction with their focus on roleplaying in general.
