Collect suggestion for new game mode.

We are considering developing a new game mode and would like to hear your opinion. The new mode is called Challenge Mode. We will set challenge objectives for different decks. For example, a challenge at the Magic School might be to earn at least 500 gold coins by purchasing a book or poison. In this mode, we will provide designated starting decks, specific prices for items, or enhanced character abilities. What do you think of this model? Do you believe this mode would diminish the exploration fun of the game (since it would provide you with some fixed combinations)?