I don't know if this has been suggested, or it's in the works, but I'd like to see a fight mechanic in the game.
I've pretty much got everything running smoothly now - I literally put in 12 hours playing yesterday. I've seen the entire map, but want more.
I'm not complaining - that's a good thing.
One thing I'd like to see is the game open up more; more land, more things to discover, and also have some battle mechanics so resources can actually be used/lost. Inflation is a nightmare for me X-D