This could end up being pretty rad if you put in the work.
The steering feeling on point. Pulling of tricks needs more depth, right now it looks like you do a canned animation based on the stick direction, as compared to something like SSX where you pull off a trick and rotate at the same time (I'm not explaining it well, but I think you know what I mean). Turning in the air could be faster, or I'm just doing it wrong.
I'm working on a similar snowboarding-esque mechanic in a side project I'm working on, so seeing this gave me a bit of confidence in it.