Lichess has a feature that I think would be very fun on chess.com. Puzzles on Chess.com are generated when games are analyzed, and so every puzzle is made from a position that has occurred in a real game. This means that somewhere out there, there might be puzzles made from your games. Lichess has a Puzzles section like on Chess.com, and they have a feature where you can look up and play Puzzles made by specific users’ games. I honestly think it’d be really fun to be able to use the Custom Puzzles mode, and play puzzles that have been created from the games of a specific person, and I’d really love to see the puzzles I helped create!