I am a long time fan of Civ and have played/owned every version including the original. There are things that aren't exactly accurate but I am OK with because it would be hard to include certain things without destroying game play; for example it doesn't take 5 years to send an aircraft carrier around the world and bomb a city.\
One thing I think could be made vastly better is the production system. It is my understanding that the shields represent the productivity of the city (money, capital resources, labor, etc.) and as such determine how quickly a city can produce a particular item. My preference would be to go to a system where you could have more than one project running at a time and split the resourcs of the city as you see fit, at least between 2 different options. It is absolutely un-realistic to have a 5 million person city only producing one item at a time. Except for periods of total war/mobilization, cities have always done more than one task and I think this could add a huge bonus to Civilization and give the player more options for their strategy to victory. Just my $0.02, let me know what you think.
One thing I think could be made vastly better is the production system. It is my understanding that the shields represent the productivity of the city (money, capital resources, labor, etc.) and as such determine how quickly a city can produce a particular item. My preference would be to go to a system where you could have more than one project running at a time and split the resourcs of the city as you see fit, at least between 2 different options. It is absolutely un-realistic to have a 5 million person city only producing one item at a time. Except for periods of total war/mobilization, cities have always done more than one task and I think this could add a huge bonus to Civilization and give the player more options for their strategy to victory. Just my $0.02, let me know what you think.