I was going to raise the same issue.
The trade function assumes that a person is missing the cards in order to match a card.
While I can increase the count for the cards I have in a trade, I can still only view matches for missing cards that the trade partner is missing.
This makes it difficult for people who are looking to deck build, as we have to have sort through someone’s collection and assume which cards they might be willing to trade pasted on their post or duplicates greater than 2.
I would like to see a wish list or a priority list that is similar to the in app system. I means users can flag their preferences for cards, regardless of whether they are looking for missing cards, deck building, or completing missions.
I think the user experience would eventually be that any user profiles that are set to public trading, are then available to be viewed on the trading hub page for others to proactively browse and offer trades, instead of waiting for a user to post a trade link. (Perhaps sorted by how active they were last online in the last 7 days or something).
I was going to but put this into a bigger post, but that was some of my initial thoughts.