I'll start by saving you and me the time of repeating the points listed in the Developers Trailer... They are all ones I would list as 'Pro'. While the few I enjoyed the most being the custom Leveling and Party Building.
Put simply, this may be an RPG Maker game, more than enough effort was put into customizing the experience so that it hardly feels like one, and more like an old skool JRPG.
I'll also note that I have not experienced the Arena, Abyss, or the Hunters Guild... But if I understand them, I doubt I would appreciate them if I did. They strike me as cookie cutter grinds, and there is already plenty of that in the default travel mechanics as most point of interest are extremely far from each other.
lastly, I'll mention that I am still intent on playing the game, so the 11 hrs (as of this review) is just a start, though I think PLENTY of time to form an opinion.
Here are my criticisms. (In order of irritation)
#1: Lack of quest log.
With all the custom scripting put into this title I am dumfounded as to WHY even a simple quest log wasn't one of them. As a result it is WAY TO EASY to get side tracked and no remember what the hell the point was of being wherever you are. ESPECIALLY after taking a few days off from playing it, or playing other games in the interim.
#2: Skill Purchasing.
There is NO WAY to know why you should choose one skill before another, due to a complete lack of cost, restriction, and condition information for almost ALL level up purchasable skills. A one line blurb simply isn't enough. Its implementation is an illusory depth that would serve equally if it were an auto gain on level up, like 99% of JRPG's.
#3: Specialty Classes.
There is simply NO reasonable excuse for the way the specialty classes, (e.g. engineer) are implemented. One is forced to choose this specialty before the game even begins, and is LOCKED into it without full context as to how each ones 'specialty' (*cough* weakness) is made up for by choosing it.
I mention the engineer specifically due to the LOUGHABLE specialty to side step travel via tunnels... Which IRONICALLY serves more to remove needed leveling (grinding) than anything, as the time saved using the tunnels will have to be made up for in between by fighting more battles to make up for using the tunnels in the first place. AND you've stuck fighting those 'make up' battles with a weak alternative to another class, or whatever...
You're BETTER OFF totally ignoring the specialty classes. (or so it seems)
There are few more but they are minor.
Over all, the positives outweighed the negatives, and I would recommend this game.