It's underappreciated because elitist fags always make it seem like a pretentious shitfest by calling it DEEP and LIFE-CHANGING. It's a fun movie with nice, cartoony animation, some nice character development and a lot of obvious symbolism, but it's not even remotely deep. Hell, it's not even MEANT to be deep; it's the usual "nerdy loser finally gets a life" story with a few twists. But it's still awesome.>>11075319>You mean Max Fleischer? I don't know what his stuff looks like, care to explain?
You know, Popeye, Betty Boop and the like. That's the style Miyazaki used (though he added some of his own touches)
As for superflat, I'm not sure. I think it's supposed to be 'a commentary of otaku sexuality and post-war japanese society', but that's a really pretentious way of saying "use irony and parody as an excuse to draw really disgusting shit". It's almost SA Goon-ish.
Also, I don't think her large breasts had a DEEPER MEANING or anything like that.