From learning from the other professionals out there I have found that cutting the head in certain shots and just having wheels and handle bars is a popular shot and looks good in my eyes.
I do agree with you on that part, as I too occasionally use wheel shots as a medium for showing action, but I feel they make it really hard to show emotion as there is no facial expression to go off. On a personal scale, I most enjoy shots such as the one at 36 seconds where it starts on his wheels then pans up and when he leaves the shot his head is in the frame.
I think its just one of those things, like all shots I think it needs to be used in moderation but of course everyone is always going to have a bias towards one type of shot than another. I for one really enjoyed the majority of the shots where you finished with his head in the frame, but that might be because of my still photography background, and the wheel shots I most enjoyed were the ones where you finished with certain parts of his body cut off, i.e "not at the ankle, but in the middle of the shin or thigh. Not at the wrist, but mid-forearm."
In the end I don't think it really matters as my opinion is going to be completely different from the next persons, but that's just a personal "gripe" if you will that I have with the composition of your shots. I guess any shot can work, its all about how it is framed.
On the whole, I really liked the video though, and I didn't have an issue with the frequency of the shots that were in slow-mo, do you use twixtor?