From what i read on other web pages about this game, it sounds like they "borrowed" alot of earthbound rpg stuff (such as modern day type of characters to join your team). It also sounds like you can recruit lots of people, and switching them out is recommended. Also, according to one page, you can also change the world around you (speculation maybe this is dependent on your job levels of your party)..
"What's with the Hand-Nose thing?" ~ Wein Cruz talking about Hans from Growlanser Generations