This is my own little review of the game. Take it as you will, but this is what I've experienced of the game.
1) THE BEST LOOKING PMD GAME TO DATE. Seriously this is the most gorgeous Pokemon game to date, the world is vibrant and colorful, and the 3D Pokemon models look incredible. I can't wait for X and Y if this is any indication of what Pokemon on 3DS can do.
2) This may be a con for some: The game is more streamlined, meaning, it's a lot more accessible for people who have not played the previous entries.
3) The Dungeons themselves have these sub puzzles where they take you out of the Dungeon, these are a nice change of pace. Also for dungeons, they look incredible in terms of layout and design, and finding the staircase is more challenging than the others.
4) Menus look a lot more like clean and easy to use.
5) Your moves can be upgradable. ie) Dragon Rage can be turned into Dragon Rage II; giving it more PP, accuracy, or damage.
6) This may be a con for some: Hunger is gone for the majority of the game.
7) The MagnaGates are a nice distraction. You can enter random dungeon as other teams and collect items from that random dungeon. They give you a difficulty level as well. The items you take back can be used for your main party, but you can't take the Pokemon there.
8) Street Pass and DLC. Streetpass can be used if you faint in a dungeon, someone can help you if they have the game as well. DLC is offered and the first one is free until April 30th.
9) A nice amount of upgrades, in terms of bag, rank, properties for your paradise, etc.
10) The music in this game is incredible! I normally don't use headphones for handheld game, and for some I mute it, but for this I had it on full volume for the music.
Cons:
1) Game is a little on the Easy side. Since hunger is gone for most of the game, you mainly have to worry about PP consumption. Even then PP restorative items are all too easy to find as you progress.
2) ONLY 5 STARTERS This can be "game breaking" for some, because you can only choose: The Gen 5 Starters, Pikachu, and Axew. Last PMD had around 19. To me that is lazy because you have much more processing power on the 3DS.
3) There seems to be lacking a lot of the older Pokemon and even some from Gen 5 are missing.
4) You can only do ONE REQUEST at a time. I find that very annoying that even though there are three or four requests on a board for the same dungeon, you can only do one at a time.
5) Text Speed. It's very slow, and unskippable.
6) The story itself isn't as long, or epic as the others. It takes awhile for it to hit it's stride, so some may be turned off from this. And there really isn't much after-story at all.
7) You are UNABLE TO CHOOSE YOUR GENDER OR YOUR PARTNER'S GENDER! This is a point of frustration for most that I've talked to on other forum boards. And this is, I believe, out of pure laziness. In the Japanese version, you are able to do so, but in the US version, all choices are 100% male. This pretty much shuts out female players, and it doesn't allow guys to choose to have a female partner.
8) The DLC content adds nothing to the story. They are all only dungeons which provide perks for each. There's no reason why they couldn't have been included with the game other than to use the game in a cash cow fashion.
Overall, I do say it's worth getting if you can get past the flaws. It's not as enjoyable or fulfilling as Sky, but it is still enjoyable in its own way. Still, i would like to see a few patch fixes done to it, namely a return of the gender option that they removed from the US version and had in the Jap version, and extend the post-story a bit more.