I would have kept intro all slomo..it'll have a more dynamic effect when the music picks up/color switch.
I liked the follow cam stuff - especially 1:35.
I liked the progression multi cam angles on some of the rails features round 2 mins had good flow with that.
Maybe do some speed ramps…example could be between 2:40-2:44
Try to push yourself with more creative shots. Check out my example below 1:20-1:24..moving from a dependent shot of the rider to something else, or having something in the foreground. Maybe a quick rack focus could work…closeups could go a long ways too. I felt your zoom was on wide the whole time, so mixing it up could help push the video in being more creative.
I dug the music & I thought the length was fine. As for cc stuff, I'm on fcp7 and use video scopes to give me a quantitative number for how my whites and blacks should look. I did not do this on the video below...video below was just kind of slapped together (2 winters ago), but I'm sure cs6 has some kind of histogram thing to see what your blacks/whites should correctly be.
I haven't done many park edits but I did one a couple years ago https://vimeo.com/22531042 btw, I think you're actually in the opening shot! Looking forward to your next one man...you got a sick group of riders.