You're right about the crops. From what I can see, it shows the original X and Y resolution, but it wouldn't record when you've resized so I don't think you could infer it from anywhere. Furthermore, the 35mm equivalent focal length is accurate wrt to cropping but you can't compare like with like when it comes to depth of field (i.e. our 50mm lens might be equivalent to an 80mm lens on a 35mm camera, but 50/f1.8 has more depth of field than 80/f1.8, regardless of whether it's cropped to a 24x36 negative or an APS sensor.

And you're right, it's not always possible to compose in the viewfinder for a lot of reason - particularly if you're using prime lenses.