Before working on more complex issues like AI and river graphics, please add more info that can streamline the game better and make empire management simpler:
1. When hovering over a worker, display what he is building and turns to completion.
2. When hovering over a unit (enemy or friendly) display its strength, ranged strength, movement, etc in addition to nationality and its status (fortified, healing, sleeping, etc).
3. Ability to move the city display screen by moving the mouse to the end of the corners of the window.
And some others in the same vain that I forgot to mention
Thanx