Just to answer directly. I'm looking for an improved shave, from the baseline (a microchipped edge that was uncomfortable). I got there with the 12k and Cr-Ox. Now, I'm looking to experiment with film and see how it works out.
In addition to the true test, the shave, I'm looking at the edge to see how it changes at different stage, to see if something bad happens (not getting good coverage, more chipping), and to get a feel for how the edge looks at the varies stages of the process(es) I'm doing.
Probably movie curiousity, but I look at the edges for new blades, and blades I get from pro honers too, like the one I just got back from Lynn, with the free hone I had for my Boker.
Update: Your point is well taken though, not to rely too much on the look.