One thing I'd like to see them add is a way to keep track of where final destinations are when having multiple units heading to the same area. It's frustrating when I am having them all go attack several cities, and I can't remember exactly where the final destination is, and all of a sudden, I am redoing the route of a particular unit(s) several times.
They need to adjust route-to mode as well, because the one-unit-per-tile limit causes a route-to by a worker to be interrupted, which also causes alot of headache when you are building roads to network your empire. It'd be nice to be able to have the worker units be able to work together to finish various tasks faster, such as having two units meeting in the middle when running a route-to command, instead of getting interrupted.
Path making isn't very smart this particular command either. They seem to take the longest route, and don't directly connect cities. For example. I want to connect two cities in a direct route, however, in the middle and a little farther to the right was a city-state that I was allied with. When I chose to route-to my city, it created a route that went east to my capital, then south to the city-where it's route-to command was interrupted because it couldn't complete the route. It was either conquer the city-state, or manually create a road to create the route I wanted. I ended up conquering the city-state because manually creating the road was too tedious, and I had more important matters to attend to (war with Rome lol) They need to allow you to choose exactly what route you want them to take so that you can create the exact route you want.
I also agree with Leuf when it comes to the AI lacking any enthusiasm whatsoever. They also seem to have some weird ideas when it comes to what you are doing. Catherine sent one of it's units out to explore, and I had a load of combat units sitting at my borders on the other side of the continent. When her single unit reached my side and the units, she commented that I had surrounded her army and asked if I wanted to attack her. Seriously? you're the one who came to me. Out of idiocy, I attacked and wiped her off the face of the planet.
I am still loving this game though. Not having to create units for every city to fortify really opens up the game so you can focus on other matters, like beating England to the Great Wall
I do love the one-unit-per-tile limit as well. It really brings a deeper level of strategy to the game, and finally treating ranged units as they really are is perfect! I love the embark ability. It's nice to be able to explore other continents much sooner in the game.
So far, I am really loving this game, and I can see the potential, once they work out some of the quirks and get a couple expansion packs under their belt.