The only downfall I met was the game would in fact experience several moments of lag if I had an incoming Skype message. Other than that it provided me at least an hour of entertainment spread over two days.
Had a really bad glitch about halfway through the game, entered a fight with the Uranium-holding province and the fight began but all I could see were the enemy buildings and the previous menu. 2/5 for incomplete play.
The annoying score screen would pop up with a disabled close button then I could not see to run the next slope. Get rid of it entirely if you cant make it close.
I thought of a feature that would be highly enjoyable for people who play this more regularly (going for 100% completion). "Saved Hands" where you can save presets for your Deck Hands. I keep my different card combinations written down. Just a thought.
There are a few very annoying inconsistencies in gameplay that don't make sense. Such as Poca Cosa suddenly needing leather (when its supposed to be a leather production city). Also the routes change too quickly. I ended up losing over 7 grand due to a changed route in the first 15 minutes of play!