I prefer OAR to zoomed/cropped for HBO (or to old pan and scan) releases. However, IF a filmmaker has a preference for home video releases, one that is not OAR, I will support the filmmaker's choice (even if is not my preference--as was the case with Kubrick releases years ago). I strongly believe filmmakers should be free to decide how they want their work presented in any given format.
As far as shifting ratios are concerned, I only have the two Batman films that do so and while not OAR to the IMAX presentation, I still prefer them to the straight 2.35:1 presentation of the DVDs.
Ideally, especially because it can be easily accomplished with today's technology, I think all shifting ratio releases should include a fixed ratio non-IMAX OAR version as an option in hi-def, but I'm prepared to forgo that if I get the shifting ratio version. YMMV