I'm hoping to catch this one soon.
I think almost everything becomes dated after 10 to 20 years. What's 'cool' today will become either ridiculous or be considered 'old-school' in the future. Occasionally, though, some things become better with age (for ex.: '70s classic rock).

One thing that stands out to me from the trailer: the kid doing the 'Hung Gar' -looking movements while Jaden stands there, then jumps up and kicks the kid in the face. I've seen quite a few movies, mostly HK but maybe a couple U.S. ones, where something like that's been shown. It's strange how Hung Gar is chosen so often for that. I think it'd be more appropriate, and probably funnier, to show someone doing some flashy modern changquan wushu moves and have that happen.