>From 90 mobile suits to 110 mobile suits featured in the game.
>The New Overdrive which allows either extra shots and cancel special shots to regular shots for combos or Extra Hits for Melee Hits for new combos capabilities.
>New Bosses
>Introduction of the 1500 cost suits
>New Graphical Look
>New Navigators and having your Navigators actually speak to you in battle, and have special dialogue with certain characters. I.E: Lacus and Kira, Lunamaria and Shinn, Haman and Puru Two, and etc.
>New Moves and Rebalance. (I.E Lacus Clyne in Infinite Justice isn't totally terrible now and High Mobility Zaku II (Johnny) isn't totally shitty.)