WELL.........
In 7 you have a choice to change weapons in game. For example, before you start a battle, you can go to a menu to select which two weapons to bring with and then in battle you can switch to the other one in mid-battle. Which in my opinion is really awesome!

There is a Story Mode where you go through the story of each kingdom and you play as one character for one mission and then the next mission you play as a different character. For example, during the Yellow Turban Rebellion you play as Liu Bei then the next battle at Hu Lao Gate you play as Guan Yu. It's really fun!

I think they added new looks for 2-3 new characters in the game, I am not sure though because I have not gotten that far.

The new weapons are amazing. Nuff' said.