This will be reviewed again once GiantBomb exposes DLC data to developers.
This is a great idea and something I had thought of but was waiting for someone to request. I’ll include this for my plans when I update Ownership features.
Definitely planned, should go along with optionally hiding games in your Wishlist from “My Games” view and My Games stats.
Good news. The new data provider I’m migrating to tracks a bunch of external links to games from GOG, Origin, MS, PSN, Steam, etc. that I will be able to use to enable this feature.Phillip S commented
games.directory was syncing Steam, PSN, and Xbox with just the username, if I recall correctly. Unfortunately, the site appears to be down now. It looks like his code is in github, though.