I beg you, if you are a developer of an open source app or program - add screenshots of your app to the README file. When looking for the perfect app, I had to install dozens of them just to see what the user interface looked like and whether it suits me. This will allow users to decide if the app they choose will suit them… Please, don’t think about it, just do it…
I prefer the simple, sane defaults that work for everyone with a heavily commented config file giving detailed information on what each value for each option does, personally. Like MPV’s config file.
I haven’t even touched MPVs config file because I just assumed it would be empty like so much other software I use. Looks like I know what I’m doing tonight.