- Unique architecture sets.
- Unique unit skins for each civ, optional to have on/off for each unit, for each civ, under settings
- An inbuilt civ designer engine, either for custom lobbies, or just single player
- A better AI. Also, why does the SOTL extreme AI say gg wp to him, but not to me? Is is just salty when I beat it, or does he have something else being added?
- At least some of the stuff here
- Lots of bug fixes.
- Fixed matchmaking system.
- Spectator chat, but maybe as an option that all players have to agree to before the game starts.
- A more balanced Arabia.
- New DLCs, but not Europe ones, at least for a while.
That is a big list, and some of it has already been said, but still.