+1 for looking UP !!!
So will there be a feature or mod in future to look UP? I really hope Larian did consider this in development. I remember DOS1 when they first didnt allow rotating camera cause they saved time by not mapping unseen areas. (Later in EE they reworked all areas as far as i remember) You could enable (unrecommended) rotation though.
For gameplay I don't need looking up. But I love to watch around and looking the panorama and making nice photos / screenshots. Such a beautiful game and what a waste if not being able to see big part of the world's perspectives. I really won't mind seeing clipping whatever minor glitches.