Cor blimey. Months have passed, finally got to it, and the more I play, the more depressing it gets. Level 5 threw some old stuff together and called it a day.
The battle system recycled from Rogue Galaxy got more annoying menus and timers, and worse controls. Your AI partners are dumber, and the ability to control their magic and item use was removed. Now they just cast whatever they can and hope that you personally will throw insanely expensive coffee cups at them. The "AI Tactics" menu can go to hell, because I have to access that shit mid battle, while scrolling though a list of every other thing my character can do, all while the action is unpaused.
The exploration, things like alchemy and casino, were obviously reused from Dragon Quest VIII. Only in DQ8 you started on a medium-sized land mass, had fun there, had fun on another similar chunk of land and then travelled to the largest continent on the map, where you conveniently received a mount for getting around faster. NNK starts you on the largest continent, forces you to trek all the way across it and all that's left afterwards is scouting the surrounding islands. Also, the fast travel spell was one of the first things you got in DQ8. NNK gives you one 20 hours in, to make you appreciate all the "go there, and get back to town" quests.
Sidequests. Over a hundred of them. Loosely they can be split into two groups: brain-dead puzzle fetch, and annoying as hell "pray to RNG god for a drop or monster taming".
Studio Ghibli stuff... there are some animated cutscenes... sometimes. Mostly the story uses in-engine walking and staring animations and loads of text.
The story overall is as generic as it gets, the characters are pure cardboard. Any possible attempts at making things interesting drown in paragraphs of garbage writing, repeating the main plot points time and time again. The White Bitch plot, added to the PS3 edition over the NDS release, is literally strapped on. At random points the game cuts to a hall where the dopey titular character sits with some aliens from Stargate and complains that the main character just won't die. "- We're crazy powerful wizards. Maybe we should try to kill him seriously, instead of again sending in that guy who screwed up every single attempt so far? - Nah..."