I was checking out the v0.6.0 update for Mops & Mobs, and the card combat overhaul caught my attention, especially replacing the single broom card with a deck of broom cards and adding different challenge modes. I like that you're changing the actual combat decisions rather than just adding more content.
I'm curious, was the new deck system something you had planned from the beginning, or did playtesting show that the old combat system needed more depth?