I love the game "Ora et Labora" by Uwe Rosenberg. It is has especially a nice 2 player mechanism.
In 3 and 4 player mode the game ends after a certain number of rounds. Which I like very much.
However in the 2 player variant the game ends, when there is only one building left to built. I find this troublesome. My first problem here is that if both player focus on the production of goods, the game can be very long. Moreover, some of the buildings (yellowish) have to connect to your main building complex. If you have been not careful, it can be costly or impossible to get rid of these building-cards.
I am interested in alternative ending rules. What about stopping after a fixed (how many?) number of turns. Should there be a final settlement phase in the end? What was the intention of the game designer to have a completely different 2 player game termination rule?