The second expansion adds a two new dimensions to the game: trade and repeated turns.
Some city tiles now provide trade symbols, and the player who hoards the most by the end of game gets ten points for each majority. The trick here is that the trade symbols are awarded to the player who completes a city, even if he has no meeples within.
A player may also place a builder meeple on a road or city – and whenever he grows the structure where the builder assists, he gets to pick and play a second tile.
The third addition, a pig meeple that boosts the scoring on a field, is more limited in scope to these two.
Both change the flow of the game quite a bit, and especially in games that use both expansions the scores tend to run high. In some ten games the AI has proven a bit fragile, the personalities that have been reliable high-scorers (count and countess) no longer rule the land as they have used to.
Like its somewhat simpler predecessor that went unreviewed here, this expansion is heavily recommended, even if its gamecenter achievements are very much on the boring side (and pretty much demand a few games against a local opponent that lets the wookiee win).