Feature Request - Collapsable Cards/Deduplication

I'm not sure how difficult it would be to implement, but it would be a nice feature to be able to have effective duplicates of cards under an expandable card 'header'. There are plenty of examples of cards that are practically the same, but each have their own entry in the webapp.

For example:

I think most people would agree that these two cards are the same character, but they appear twice in quick succession since they were both updated on the same day. There is also a third version by a different author, which could also get folded under this same header card. I made a quick (read: shitty) MS-Paint mockup of what the header card may look like:

It would also be nice to be able to have somewhat granular control over what thresholds are used to quantify which cards are duplicates (Tag Overlap:100%, Same Author, Token Similarity, etc.) in a manner similar to Chub Desloppifier.