Has SE said anything about changes between IZJS and this (in terms of gameplay)? I'm wondering if they made any more adjustments to the zodiac license boards or anything.
The one thing I didn't like about IZJS was that you had to really plan out your party before starting the game. Each license board has multiple nodes locked off by espers, and only one character can activate each individual esper, so you need to make sure you've planned out your classes so that you can get all the nodes you want. That's not even going into making sure you have a (convenient) way to attack long-range enemies, or heal, or so on.
There's a panel in about 2 hours that will be focused on FFXII and new stuff they've added. So we'll likely hear about those changes then.