It would be fun if every now and then, they made a pre-set board and characters where you would need to beat that level in a specific amount of moves.
You’d need to be creative and move carefully. For example, there’s only one set of moves that would create a chain of match-5s that would allow you to win.
As players, we’d need to promise to not post any spoilers, so that each person enjoyed the puzzle and didn’t just blast through for any bonus it provided.