Since enemies have status effects now, and some of them can be REALLY tough even with maxed out armor and weapons (looking at the Golem perma-disabling card slots and Goblin Shamans healing each other the little damage you manage to scrap through their dodge and the curses), I'd say we urgently need some kind of status cleanse for ourselves.
Also with the card pool increasing, it will be maybe too difficult to actually draw the cards you need to survive, so a card that allows for cheap (or even free) re-drawing of the hand would also be nice. Another great addition would be to allow the player to "edit" their deck to decide which of the new cards to add or remove manually (not counting the default cards), as to prepare strategically for each enemy and depending on skill point allocation. Hunters do prepare as much as possible for their prey, right?