I've long been interested in the way size and "resolution" affects art. I once asserted that bigger size (or resolution, or more detail) allows for deeper and stronger art. I got a lot of protests against that, and I think the reason for the protests is that you don't need a lot of size/detail to do pretty powerful art, but I think it's true nevertheless. For example a picture made of 4x4 pixels in two-bit mode (black or white, not even grey tones), how much art can you make with that? As soon as you expand it to 8x8 pixels, the possibilities expand greatly, and so on.
I just found a funny example of size and expression. In the big version of the picture below, it's clear that the girl is smiling. In the scaled-down version of the same picture, she no longer appears to be smiling! Just the subtleties lost by that scaling has changed such an important characteristic.
... nothing has been changed at all, except scale.