Thanks for the kind feedback, @mangowambo!
For balancing, I want the game to be as balanced as possible, where some cards have the advantage of being good for stats, others for effects or economy. However, there are no economy cards yet.
Regarding "new content" - I'm actually a fan of classic content and a steady progress. The current "anamolies" in HS Battlegrounds are a bit too crazy for my taste.