For women's Nordic Combined it's a matter of 2022 or 2026, not a matter of if. I think it needs a couple world championships under it's belt, so I think 2026 would be better, but I can easily see the IOC hurry things along and add it for 2022 since it's the last remaining discipline in the Olympics (winter or summer) that doesn't have women. To be perfectly honest I don't care about Nordic Combined enough to have strong feelings either way. For the same reason I wouldn't be surprised at all if women's doubles luge gets added for 2022 despite never having been held at high level (or any levels, really), and if it doesn't get added I think it should make people worry about the future of doubles luge in general.
I do think women's Ski Jumping is ready for a second event, though. The caliber isn't nearly as high as men's Ski Jumping, sure, but it's comparable to a lot of winter sports and depth seems to be developing fast. You wouldn't even need to add any athletes to add a large hill event.