I added the finalists to the wiki. I'd be interested in hearing from the other designers about their sets!
Game 6 ("First Game's Revenge"): University, Expand, Grand Market, Altar, Bazaar, Embassy, Margrave, Pillage, Horse Traders, Menagerie (Colonies, No Shelters)
Each card in this game is intended to approximate a combination of two cards from the "First Game" card set. Some are very literal combinations (Grand Market has the properties of both Market and Woodcutter; Expand can do the job of Mine or Remodel) while some are a bit more thematic (Pillage gains Spoils to mimic Mine's treasure gaining and is a discard attack like Militia; Menagerie is effectively a Moat against Margrave with a bit of Cellar's cycling).