Yeah... I don't think Kong can work without 3D. It has scenes where stuff is supposed to be flying through the car. Not having it would take a lot away.
Also, 3D itself isn't a bad thing, it's the overuse of 3D resort-wide. So, no reason to do away with it at Kong. Just have to get more creative with future attractions and replace some of the poorer screen/3D attractions with physical attractions. No reason Kong has to be changed.