If you wanna be a park skier, ski park.
If you wanna be an overall bawss and rip every part of the mountain, then become a badass, all mountain skier. Mastering every aspect of skiing is awesome and props to those that do that, but it's hard and pretty rare...especially these days.
Watching people like Delorme and Candide, who are as comfortable in moguls as they are in the park, is pretty fucking awesome though. So hopefully we still see more of rad, well-rounded skiers and less " I know how to 450 onto a rail but can't ski the mountain" skiers.