I'm not trying to flame you in ANY way, but why the hell would they want to do that?
Mass Effect was a great game, sure, but that doen't meant Obsidian can't do their own greatness. And I HATED Mass Effect on my PC. Seems to me that Mass Effect was exclusively desingned with console gamers in mind.
Better off doing something different for K3, if you ask me.
Agreed, it was bad on pc.
And yes I liked the previous engine, but I believe they could brush it up a bit adding more combat animations and make it seem more fluid.