The possibilities are limitless. Freeskiing will continue to develop from the streets to the park to huge peaks.
I remember back in the day thinking, "Wow, we've come so far, what could possibly be next?" Guess what, there's ALWAYS something next; whether that's a new grab that no one's done before; a new take on an old grab to freshen it up (tweaked safety for example); stuff like surface swaps instead of just hopped switch-ups; and so on.
It's like fashion. Clothing designers aren't going to say "Well, we've designed everything already, so we're not going to make a new line this year." They're going to come up with something new. Skiing will continue to do that every year, and FOR THE LOVE OF GOD IT'S NOT GOING TO BE ALL ABOUT DOUBLES AND TRIPLES ON AND OFF OF RAILS.