Allow us to program decks into hearthranger. For example, spot these cards on your opponent's side = this deck and it plays on the basis that the opponent has these cards. Alternatively, you can insert your own deck into hearthranger and it will play with consideration of the cards in your deck. I think this should improve win rates drastically. It should also speed bot calculation because it doesn't waste time simulating useless situations.
The bot should also prioritise playing around more common secrets such as mirror entity, freezing and explosive.