Re: Film makers?
So much of how we currently make films is predicated on being able to control the framing - which essentially is a refinement of plays which operate on a stage.
People may have said the same about TV/Film when it first came about. If this takes off, I expect the first step will be as a slight enhancement to current films. Instead of getting a single, framed shot, you become immersed in the shot, able to look around (a little) and feeling that you are actually there instead of watching from a distance, filling your entire vision. This is how films started, I believe, as an extension/evolution of theatre.
So, I predict the first VR films will still mostly control the framing, the main direction you are looking etc, but expand the frame so you feel immersed.