A. I REALLY HATE what they did with roads. It's historically inaccurate, and it slows down the game needlessly, as it's pretty much impossible to link up even a small empire of 6 or 7 cities until well into the Industrial Age! Those Military Engineers are *expensive* and building roads is now basically pointless -- 3 MEs for a road between two cities 6 spaces apart?! No, thank you.
Worse, railroads are also worthless which is also historically inaccurate and further slows down the game. In most games, I have operational airports before I have railroads between my cities.(!)