No, it would be a completely arbitrary rule and senseless.
If you people are so pissed off about progression and saying this is a huckfest, just take a look at all prior X-Games. The competition is as skilled as its course design and size of features.
Back in 2003, the features were puny compared to today's, and even going huge on the last booter only paved way for a sw 9.
In the first few games tricks were ugly and uncoordinated, "hucked". When the style and confidence started to come into play, switch 9s and 10s emerged all around quickly, and pretty much everyone did a sw 1080 on their last hit, causing kids to start calling this spin-to-win, huckfest.
Then Jon brought a Kangaroo into the mainstream, and that became the go-to trick, and soon... you all see where this is going.
The X-Games is about entertainment for the peons. All those who are complaining, NOTHING is stopping you from organizing your own competitions, where you can set your own set of features, your own set of rules, invite your own kind of competitors, aching for "style" only.
Go! Call up some possible sponsors, contact your local hill, set it up! If you succeed, do it again, grow it in scale, become a competitor for the "normal" comp circuit. Just do it instead of complaining about the way "your" sport is progressing. It's not yours to own, it's not yours to order, but it's fucking yours to affect if you really, really want to.