DU is for murderhobo edgelords. Which is why there is no reward for playing differently.
I have over 500 hours of baldur's gate 2. Played multiple times, with multiple characters, soloed the enhanced edition in legacy of bhaal difficulty with a pure RP build and played Dark Urge exactly because I wanted to know what Larian is doing with the Bhaalspawn saga. That is why I chose Dark Urge. I wanna be the Bhaalspawn again.