I'm really new to medium format (digital or film), having bought a 645Z about 3 weeks ago.
This thread is no more or less than idle chatter but it has struck me that unless everybody is cropping to retain the format, there is a definite lack of cropping of images. I've also noticed with my images that the format and dimensions appear to be more "natural" to me for framing an image than 35mm.
It's ironic that we have all these pixels to cut away and don't.
I'd be interested to read other people's views on it's my imagination and if it's not, why they think that is.
From my perspective, the format lends itself more readily to composition.