There are various reasons for you to be excited about the combat mechanics.
If you aren’t familiar with the mechanics of Final Fantasy XII: The Zodiac Age, the video embedded below will introduce you to the combat system. Called Gambit System, it allows players to deeply customize their gameplay and each fight.
The video focuses on five main aspects of the Gambit System, including base changes that were used for the remake. Well, maybe four, if you don’t agree with the second point. Take a look yourself: