an optical viewfinder would be the best idea - even ps technik built one to the new weisscam (www.weisscam.de) - many dop want to have that and to bring the camera to the important market for commercials it would be a need.
i am sure, that a lot of people would pay 10.000 $ extra for it.
i am sure, that a lot of people would pay 10.000 $ extra for it.