Disclaimer: I have not seen the film and probably won't see it anytime this decade.
I hate to tell you but maybe the 11 year old demographic is the target audience at this point.
I know that us middle aged geeks have become accustom to Hollywood trying to string us along but maybe they're finding the gulf between the camps of the younger consumers and the disgruntled middle age so-and-sos a bit wide so they're finally giving up. After all, your parents went to films they had no interest in but you did. I can hardly imagine the thrill my parents felt by me dragging them to great spectacles of cinema like The Dark Crystal and The NeverEnding Story (and these were the good ones!). Now it's your turn to ante up for all kinds of inane crap drummed up by some ex-advertising executive who's decided to try his hand at film making.
The sooner that people start to realize that Hollywood (and pretty much all major entertainment industries) sees the aging consumer as a second class market the sooner the aging consumers will let go of pop culture. And it's a good thing too. It's not like there isn't a market for the adult consumer, it's just not the same market as what you embraced 20 or even 10 years ago. Comic book/fantasy-adventure movies just aren't going to target the adult market, at least on any great scale.