Ability to mark game as unwanted.

Hopefully I'm doing this right! One of my favorite uses of this site is the ability to add the games from the main list per console, and then see the orange "in" marker on the side to note you have that one. A feature I was wondering if it would be practical is to be able to do the same thing, but to mark it as something you don't want, rather than just something you don't have as the blue plus signifies. I ask since many of us curate our collections and use sites like this as a database to help research games.. With thousands of games out there though, it can be daunting to know which ones you researched already, especially as new games are added over time. If there was a way to maybe mark games you decided you don't want with a red mark that says "no" or something, I think it would go a long way to helping keep stuff organized. As is right now, I still have to sift through about 2000 PS4 entries, being able to mark off the ones I've decided on one way or another would be amazing! Thanks for hearing me out! Sorry got the extremely crude image, had to do this from work!