I don't think they would add dungeons created for the new battle system if only auto-attack makes it into the game. I don't see why they would waste their time re-balancing a gazillion times because they introduce the basic elements of the game 1 by 1. Almost all of the necessary stuff will be in 1.18, i.e. auto-attack, balancing the classes, adding jobs. If they only add auto-attack and a dungeon this game will fail on so many more levels.