mmm would be nice to have a in-real time history windows for the last 10 minutes (to gossip what are doing the others xD).

search by stats, card type, traits, rarity, name, number of upgrades, price,seller etc

checkboxes to buy/sell a lot of cards with few clicks

mmmm a "buyer" windows to bid for a card

!PIZZA
!LOLZ
!CTP