I love the era of this game world, however I just think that the 25 minute days are too fast!
It would also be interesting to know at what sort of rate we can expect passenger demand to increase, and what the current figures are based on?
Also, there are some historical quirks which greatly affect the gameplay in certain countries. For example, I'm currently based at Berlin-Tegel, which wasn't actualyl used for scheduled commercial operations until January 2nd, 1960. In the 1950's, Templehof was the 3rd busiest airport in Europe (Garriga, J. C. (2003). Airport dynamics towards airport systems.) but in the game it has next to zero demand.
And, of course, the fact that only airlines headquartered in the US / France or UK were allowed to fly in or out of the West German enclave (nor were East German airlines allowed to fly to Berlin - luckily for them Berlin-Schonefeld was outside the city limits of the agreement).
It seems to me that for this world to be fun and engaging, there needs to be a mechanism for dealing with the unique political situation, such as the above.
Anyway, it's all still loads of fun, playing in this long-gone era. Glad to be a beta-tester.