Nytmare
David Jose
That, potentially, being the case... what expansion would be the solution?
That's kinda tough. Probably any set except for Alchemy? Each of the expansions really has a core theme to it, so it would kinda depend on what style of game you liked to play.
From Ye Olde Wikipedia:
Intrigue - 500 Cards - Decisions among multiple possible effects; victory cards with an in-game effect. Includes 25 types of Kingdom cards.
Seaside - 300 Cards - Effects that persist to the player's next turn. Includes 26 types of Kingdom cards.
Alchemy - 150 Cards - Introduces the Potion Treasure, an alternate card cost; emphasizes the creation of decks with large numbers of Action cards. Includes 12 types of Kingdom cards.
Prosperity - 300 Cards - With a focus on wealth, it introduces high value treasure and victory cards as well as victory point tokens, and expensive cards. Includes 25 types of Kingdom cards.
Cornucopia - 150 Cards - Emphasizes variety in player decks; introduced a "Prize" stack, which are non-Supply cards that can be won by certain actions. Includes 13 types of Kingdom cards.
Hinterlands - 300 Cards - Cards that have an effect when purchased or otherwise gained. Includes 26 types of Kingdom cards.
Dark Ages - 500 Cards - Cards that do something when trashed, cards that care about the trash, cards that upgrade themselves, and ways to upgrade other cards. Includes 35 types of Kingdom cards.