I think it can add a lot to a movie, only
if done right. My first exposure to the polarization form of 3D was the IMAX 3D feature
Wings of Courage. I remember thinking that because you can refocus your eyes within the scenes, it greatly enhanced the level of detail and therefor the immersion factor. I thought that it could bring art direction & set decoration to a whole new level.
As long as stuff isn't popping out at the camera/audience every 10 seconds, and as long as it isn't a non-stop CGI rollercoaster like Avatar, I think
theater 3D (stereoscopic) film could find its true footing.