Yea, this is definitely not a new problem. Rather, the monotony has shifted. Went from like sw rodeo shit, to switch 10 fests all over the place, a brief respite as a new plateau was established, and now we're at the double cork/double shit that looks a lot like every other double cork plateau.
The one thing that seems to be prevalent in these showcased events with a few people is that it is imperative to throw the big ass trick. Last years X games big air (aside from being a farce) was sort of like that as well. FreestyleCH this past fall, while sick, showed that even doubles can be very tiresome when that is the norm. That is why, in the past, I've had a lot of respect for JOI or WSI big air, where repeat tricks were no bueno, and there was a desire to see a wide range of skills, styles, tricks, whatever (wsi in particular, where it went from 5s, to 7s, 9s, etc etc) rather than the one banger trick.
Format plays a big role in the ability to keep the experience refreshing. Head-to-head is cool and all, but it really exacerbates the need to throw some big shit to go on.
One thing I'm not concerned about is the talent pool. Good thing with skiing is that iit is pretty popular these days, so the talent level and pool keeps growing, keeping the whos-who a little more liquid than other sports. Granted, there will be some (coughdumontcough) that are, in my opinion, less relevant for a comp like x games big air (aside from ratings and shit) but it seems to change little by little.