I am relatively new to the game and really have enjoyed playing (mostly solo) through the core set and the Mirkwood adventure packs. But what I have noticed is that I am tending to use key cards that don't really fit in well with the particular story or theme.
So my question is: Can you enjoy this game (i.e. win 50% of the time) consistently playing thematic decks? I don't want to keep buying expanisions and adventrue packs if the only way to win scenarios is by always falling back on the same key cards that don't really fit in with the theme of the quest.