We know that the tentative deadline for the mobile client is Q1 2017, so this is likely the big hit for that time window. This would be great, but what would you like to see implemented in Q1 2017?
Please try to be realistic. A few points from my side:
Any form of casual game mode to take a break from ladder climbing. Be it a standard casual mode or something else, but some more game diversity would be important to have.
Fixes to a few UI glitches, as discussed in a recent thread. I think that some polishing around the edges would be beneficial to sell the game better, especially on the mobile market.
A few balance changes and a shift in the balancing methodology. I don’t understand exactly why the balancing philosophy always boils down to nerfing cards. Reworking cards which people love, but are not that great, could make the game more interesting.
I think all of this would be more important and healthy for the game than adding new cards.