This is a great game, but WHY are you making changes in the levels?
Some levels are really hard to finish, certainly if you want 3 stars for the gold awards. But that is part of the challenge! Some 5-10 levels have been made considerably easier without notice. More than once a train is missing, or there are fewer cars on the road, or the number of passengers is decreased, and all of a sudden the challenge is gone. That’s a pity. The rocket (55) is is in my opinion destroyed by removing the fifth train: it isn’t fun anymore and it is not even easier: the time is now too short, I already played it twice without any mistakes and there is no way to reach 3 stars. A shame.
Apart from that, new ‘countries’ at regular times would be nice. Hope for new challenge soon, and please, not too easy, and repair those changes!