It would have been if not for it suffering from "touch screen syndrome," like some other early DS games (similar to over/missuse of Wii's motion controlls), it forces you to use the touch screen to do just about everyting, every single action button (x,y,a,b,l,r) plus the D-pad all do the same thing, fire the main weapon (bombs are touch-screen as well), that's it!!! There's no option for conventional controlls either (like some Wii games that misuse the controller and don't even offer the GC controller as an alternative)
I'm a fan of flight sims (from relaistic to arcade style) and a fan of the Star Fox seriese, but they simply sucked all the fun out of an otherwise pretty good game by doing this.
There are some other minor annoyances with some of the game structure, but it's all tolerable in comparison:
the character designs are questionable -too chibi-ish-
the voices are annoying -the original used giberish too, but it was good by comparison, these ones just sound too Animal Crossing-esque (which isn't a good thing; though you can optionally add your own voice samples and the games uses that to create the giberish; one of my brothers freinds had them all saying "die die die die die die die"
some of the plot is a bit confusing, and the multiple endings are a bit frustrating, though I like the idea of a branching story line with alternate conclusions, and it's handeled decently, though only a couple are very satisfying, the main one is acceptable so I guess that's what matters, and this system does increase replay value. (I was too frustrated with the controlls, but my little brother was able to put up with them to play through all the endings, though he still disliked the controll arangement)