As I ponder my dslr future, the question of native sensor/viewing size comes into play. One reason I was excited to get the DLux3 was for the native 16x9 resolution. When I shot with either my SD400 (4x3) or D70 (3x2) I tended to crop to 16x9-ish anyway.
So fast forward to having used that for awhile, I'm also seeing instances, especially in street photos, where I'm cropping some of the 16x9 to more 4x3-ish or even 1x1. I know the reality is that I likely will end up cropping no matter what aspect ratio I'm shooing, but I'm wondering how much the viewfinder (or lcd) and native aspect influences what/how you see/shoot. And do you have different systems around to give you alternatives and push you to "see different"?