I think, just to start, there should be fishing added; but tbh there are SO MANY things that could be done with Cuba... I would be excited to see what the dev's come up with.
Mundane,
I have been working on an idea like this for a few days now and just came across your post, I have been out if the game for some time but have been itching to be back. I am interested to see what we could come up with.