To me what makes Lancaster so good is lost in a two-player game. The amount of interaction is often reduced to the same as so many other worker placement games as the need to push out others of that area you really need isn't as important as you can just get it next round and get something else this one. It's also harder to win wars in France and stopping a leading player. The tension of the voting phase is also highly reduced. This is a game that gets better the more players are involved.