-- ability to filter and sort the trade matcher (e.g. there are traders I have >100 pages of matching cards with; instead of wading through every single page, it would be far more efficient to be able to filter and sort the matches by set, by price, etc). Alternatively, when looking at a user's wishlist, there could be a filter to "show only cards I have on my trade list."

-- ability to search finished trades (e.g. I know I traded a card and I'd like to figure out who I sent it to)

-- searches by set matching unspecified edition: currently, if I search a trader's wishlist for "all Ice Age" cards, it will not find a Brainstorm with no edition specified.

-- It would be hugely helpful to use Trading Opportunities to do "or" searches, i.e. find any traders that need card A or card B or card C; currently the Trading Opportunities page can only make "and" searches when doing a search for multiple cards.