My girlfriend and i bought this expansion today and immediately started
playing it. There are a few new additions, the abbey, the mayor, the
wagon and the barns. We found the barns to be quite confusing and
just add to the farming system and how confusing that can get.
One surprise however, was the Abbey. I found this to be quite an
interesting little piece that adds a new element to the game. The Abby
can be placed anywhere on the map as long as it is surrounded on the
four corners, (not diagonals). This allows you to finish those pesky
cities that just wont get finished.
They mayor and the wagon are both useful however they do not change
the game too much.
All in all i found this expansion worth the money as it does add some
new exciting elements to the game, but definitely not necessary.