I would not blame anybody for playing Last Story for an hour or two, declaring it to be dumb and moving on. The game drops you in the middle of a combat mission with 4-5 allies, none of which explain what is going on. Everyone is talking back and forth as if you had been playing the game for 10 hours. The battle system is complicated and confusing thanks to the fact that there's nothing else like it: a real-time action RPG with about a dozen different systems and mechanics tacked on. The easiest way to explain it is a cover-based melee game with tactical RPG elements (see below). Battles aren't hard, but combine this with the lack of exposition to start and you've got a game that's not exactly user-friendly.
After a few basic battles, you get to a town area. The town area is large and feels like it's trying to pull off the bustling city feel of Assassin's Creed, except this is the Wii and it can't handle it at all. The framerate drops to about 10 fps. Your character's movement feels very slow and clunky, whether it be because the system can't handle the amount of detail or because the frame drops are so frequent that you're basically playing in slow motion. The controls are awkward due to how crappy the classic controller is -- something that could be fixed by having the more expensive one, probably, but that's their fault. The graphics are all washed out and drab, much in the way that modern next-gen games are. In many ways, Last Story seems like it's trying to imitate western-made, high-budget PS3/360 games.. except that it's a Japanese RPG on the Wii and none of this makes sense. The whole game feels clunky and jarring.
After 3-4 fetch quests that slowly orient you to the huge city that you're in, you meet a girl that's running away. She is the spitting image of every female protagonist that you've ever seen: weak, clueless, mysterious, magical and attractive. The main character and her run around the city for a while, talking awkwardly and looking at stars and talking about their sad lives and all the things that JRPG protagonists do in every other JRPG you've ever played. The character is still moving slower than you'd like and none of this is particularly interesting. The pedigree of the developer makes you push on, but if this had a different name on the box I probably would drop it right about now.
And then, finally, something interesting happens. The game climaxes and things blow up all over the place. You get to play with the battle system some more and it slowly starts to make sense. The characters start to become more interesting due to actually having some impactful events happen. After 4-5 hours of having no idea who these guys are, it starts to click. Antagonists finally show up. It's starting to feel like a PS1 Final Fantasy game and that's a really good thing. The things that Last Story is going for narratively are not particularly original, but they're fun. There's something to be said about fighting a battle that has some emotional weight to it instead of just slaughtering random packs of bugs for no reason.
The Last Story is kind of a crazy game. It's really creative in some ways and utterly devoid of content in others. There is so much to the battle system that mechanics are still being introduced as late as 3-4 hours before the ending. The game has a battle tutorial that seems to pop up every other fight for the first five hours, and is maybe the only RPG battle tutorial that I've had to refer back to after the fact. At the same time, the heart of the battle system is walking up to an enemy and letting your guy auto-attack him to death, whereupon you'll find a new enemy to do it to. This isn't a complaint -- you can turn auto-attack off if you want and make it more of an action RPG -- but sometimes the complexity of a battle system masks the fact that you're really just letting the game play itself. Ultimately, the battle system is a positive because a.) the fights are fun to do and b.) killing enemies and getting loot is pretty rewarding. Plus I have to give Last Story credit for trying something new.

I don't know how you could possibly be hiding when your sword is that fucking big, but whatever.
There is exactly one town in Last Story, and it's more of a hub world than anything. You visit a tavern, the streets, a castle and some shops. Occasionally you'll walk around and talk to people on a ship but that's it. The dungeon areas are narrow, linear pathways with large rooms for large-scale fights. Level design-wise, it's very similar to a character action game like God of War or Devil May Cry -- or, if you want to go that route, Final Fantasy XIII. You'll get large circular rooms so you can face off against foes and small branching pathways to pick up treasure chests. Action is broken up into 15-20 minute 'chapters', and you can sometimes finish a chapter by just talking to people or hitting a trigger point. It feels bizarre to be on chapter 18 in 3 hours of play, but that's just how Last Story rolls. It's bite-sized and modern. The game is over in 25 hours, 15 if you ignore the sidequests (which are trigger points followed by a scene fight or an arena battle, mostly). All of this could be seen as a negative -- or it can be seen as cutting to the heart of what makes an RPG so good: pacing, boss battles and good scenes. Last Story does a very good job in these areas, and while the bosses are standard large monsters that aren't very engaging on a narrative level, they make good targets for the unique battle system. For all of the things Last Story does wrong, it manages to nail the gameplay in a very satisfying way.
I don't think there are more than 15 named characters in the entire game, and you start out with half of them in your party. Antagonists are largely absent, replaced by a political plot focused on an external threat of invasion that is never quite explained. And yet the characters that are there are quite excellent: they seem fairly one-dimensional at first, but I'd call Last Story's cast one of the least offensive in the history of the genre. Every single character resonates in some way and the localization is fairly impressive. There are no annoying kids -- or any kids at all, really -- and no stupid characters that have no purpose other than to annoy you. Last Story's characters won't hit the highs that other games in the genre may have, but it also lacks the usual whiny, insufferable garbage. By the end of the game -- one that isn't particularly long -- you're fairly attached to this rag-tag bunch of misfits.
When Last Story ramps up towards the end, it kind of takes you by surprise: hey, this game is kind of fucking awesome. It kind of sneaks up on you and suddenly you can't put it down. The pacing is strong and the characters keep the so-so plot on track. The framerate is still crazy and the colour palette is still washed out, and it's extremely limited in scope, but you start to ignore that and instead enjoy all of the crazy things happening on-screen. You start to get some really strong weapons and abilities and you really look forward to the next battle. Everything just comes together at the right time and it feels triumphant. Holy crap, this game is actually firing on all cylinders. It may not always be awesome, but it will definitely be memorable. It's got heart, it's fun to play and it's unique. Japanese RPG fans should definitely give it a try.