I doubt that slope would make it in. Pipe is more of a chance because there is already snowboarding pipe in the olympics.
Although Im not sure that pipe skiing in the olympics is necessarily a good thing. The judging would be heavily regulated which means it would turn into a spin to win comp. And, from what I have gained, Newschoolers.com memebers HATE spin to win comps (cos its all about style blah blah blah).
while spins definately up the difficulty rating in a trick, there's still an execution, amplitude and two overall impression judges that need to be impressed as well. i'm an FIS licenced judge who mainly sits in an overall impression spot and it's not always the "spin to win" competitor that takes it.
just checking the Canadian Freestyle website and it looks like halfpipe is growing in the eyes of Canada's governing body. halfpipe has been added to the Canada winter games in 2015 and they awarded Megan Gunning the "rookie of the year" award.