also, while looking for functionality in other addons, I think you're overthinking it
instead of looking for something that is armor and displays a bottomprint, I would instead just look for something displaying a bottomprint
later I would look for something that happens on damage, after testing bottomprinting to make sure I know how to use it
and for most of the variables, you can try figuring out what they are (sometimes easy when other people give them good names (%damage isn't too hard to figure out)), or just ignore them and pass them to the parent (like it probably does in the function you cut off)
