Whether it's from a speadsheet or a tracking app, what are the metadata that matter to you ? I'm building my own tracking tool and want to add fields you actually believe are useful. I personnaly don't even track CIB anymore, I'm only tracking ownership game progress and rating.
Things that are already covered in my app are:
Paid price, personal note, personal rating, community rating and game data like cover, screenshots, release year, devs and publisher.
Is there another metadata not mentionned here that you care about ?