I think it can be as simple, or as complicated as you want to make it. We can see that there are lots of commonalities in fields from the sheets so far, with software you can have varying degrees of granularity, depending on the user’s needs.
Great tip! This is what I have done on the rare time I have had the discipline to note setups. The challenge with paper is tracking these changes, doing a comparison and having to “work backwards” to get a full picture of your setup at a given point. Software could do a good job of this by establishing a baseline setup that you set and give you a complete picture
The idea of scanning (or even these days taking a photo with your “smart” phone) is a good one. They could go in any number of apps…Evenote, apple notes, dropbox. I like the first two becuase you can add text to the notes to make them searchable.