I've only played once, and I liked the strategy of when and where to place the colored tracks. However, it also seemed like it was a lot easier for people who didn't win to lose by a LOT. I didn't really find this to be a welcome change, as it tends to make the game shorter (and I wished it were longer without the expansion). In the game I played, the game almost ended after the first round.
Anyone else have similar experiences?
I had this experience playing with the Vexation expansion tonight. Together with getting three REALLY terrible combinations of cities in a row, I ended the game very quickly. Several players were 6 or more away from completion after the end of each round which was way higher than usual.
The game was far more frustrating to me and I think it'll be a while before I try to use the expansion again.