I think this game has improved a lot in the last year and I especially like how the heroes system has been changed.
Only one thing I think has worsened with time: in the beginning every hero had its own way of been played, like if the developers wanted to suggest, with the special powers they assigned to a specific hero, which kind of deck would best suit to it.
Today there are some heroes that have definitely "flat", boring powers, that do not suggest any particular (that is: funny to play) kind of deck, for example Olfaan or Uunys. I really would like to see some more interesting, strange power; I think it would add a lot to the longevity of this game.
I would like a list of the connected players in the chat window, that would also make easier to whisper to one of them without having to spell the nickname correctly by heart
It would be useful a "deck testing mode", where you can choose number and element of squads to build a fake opponent deck and test your deck's strength.
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Chat is a first step towards a friend list, battle log, guild chat and more!