According to our commentators yesterday, there are fixed values for the tricks and judges score how well these are performed according to how much they're worth. I agree that it's not immediately clear which tricks are harder, but maybe it's because of lack of familiarity.
One of the criticisms from the commentators is that the values of the tricks are the same for men and women, and since women perform, at this point, much simpler tricks, their values are much lower than the men's tricks. Even in gymnastics, skills performed by men and by women are scored differently. For example, a double layout somersault on floor is worth 0.6 for women and 0.4 for men. Maybe skateboarding needs this kind of adjustment too.
Another cool addition would be nominating which tricks they are going to perform, pretty much like in diving. So, there could be an animation showing how the trick should be performed before they try it, and how much it's worth in scoring.
There's no point in comparing this to any Winter Olympic sport, in my opinion. At least when it comes to the Summer Olympics, it tries to do its own thing.
Also, many people here believe this sport would attract teenagers and I see that there's a clear attempt by the IOC of doing exactly that. However, it has a broader appeal, too. I'm 37, probably one of the oldest members of this forum, and I still had a blast watching it even when no Brazilians were competing. Of course, everyone is entitled to have his or her own opinions, and I'm not saying everybody will like this, but it's also a mistake to assume that only teenagers will enjoy watching this sport.