We have a whole Trello board with all kinds of polishing tickets still on it :) Our initial version didn't play very well so we needed to make some drastic changes halfway through, so we had to skip a lot of the polishing we wanted to do sadly :(
In a new version we'll try to balance it more (we wanted the cards to feel more powerful), add a small tutorial, way more cards and a lot of polishing.
Thanks for the comment!